// WARNING: This example configuration is not meant for production use. // The Kea DHCPv6 server will refuse this configuration because it contains // mutually exclusive configuration parameters. // // The primary purpose of the example file is to provide a comprehensive // list of parameters supported by the Kea DHCPv6 server along with the brief // description of each parameter. // // This current version should be up to date, i.e. new keywords should be // added in this file at the same time as in the parser specification. { // Kea DHCPv6 server configuration begins here. "Dhcp6": { // Global flag selecting an IP address allocation strategy for all // subnets. "allocator": "iterative", // Global flag selecting a delegated prefix allocation strategy // for all subnets. "pd-allocator": "random", // Ordered list of client classes used by the DHCPv6 server. "client-classes": [ { // Class name. "name": "phones_server1", // Class-specific DHCPv6 options list. "option-data": [], // Class selection expression. The DHCP packet is assigned to this // class when the given expression evaluates to true. "test": "member('HA_server1')", // Class valid lifetime. "valid-lifetime": 6000, // Class min valid lifetime. "min-valid-lifetime": 4000, // Class max valid lifetime. "max-valid-lifetime": 8000, // Class preferred lifetime. "preferred-lifetime": 7000, // Class min preferred lifetime. "min-preferred-lifetime": 5000, // Class max preferred lifetime. "max-preferred-lifetime": 9000 }, { // Second class name. "name": "phones_server2", // Class-specific DHCPv6 options list. "option-data": [], // Class selection expression. The DHCP packet is assigned to this // class when the given expression evaluates to true. "test": "member('HA_server2')" }, { // Third class name. "name": "late", // Boolean flag indicating whether the class expression is only evaluated // when the class is required, e.g. the selected address pool configuration // includes this class name in its "require-client-classes" list. The // default value false means that the class test expression must // always be evaluated. "only-if-required": true, // Class selection expression. "test": "member('ALL')" }, { // Fourth class name. "name": "my-template-class", // Template class flag that holds the expression used to generate the names for all // the spawned subclasses. In this case, the classes are named after the client ID. "template-test": "substring(option[1].hex, 0, all)" } ], // Parameters for triggering behaviors compatible with broken or // non-compliant clients, relays, or other agents "compatibility": { // Parse options more leniently where fields can be deduced // deterministically, even if against RFC or common practice. "lenient-option-parsing": true }, // Command control socket configuration parameters for the Kea DHCPv6 server. "control-socket": { // Location of the UNIX domain socket file the DHCPv6 server uses // to receive control commands from the Kea Control Agent or the // local server administrator. "socket-name": "/tmp/kea6-ctrl-socket", // Control socket type used by the Kea DHCPv6 server. The 'unix' // socket is currently the only supported type. "socket-type": "unix" }, // Specifies a prefix to be prepended to the generated Client FQDN. // It may be specified at the global, shared-network, and subnet levels. "ddns-generated-prefix": "myhost", // Boolean flag indicating whether the server should ignore DHCP client // wishes to update DNS on its own. With that flag set to true, // the server will send DNS updates for both forward and // reverse DNS data. The default value is false, which indicates // that the server will delegate a DNS update to the client when // requested. It may be specified at the global, shared-network, // and subnet levels. "ddns-override-client-update": false, // Boolean flag indicating whether the server should override the DHCP // client's wish to not update the DNS. With this parameter // set to true, the server will send a DNS update even when // the client requested no update. It may be specified at the // global, shared-network, and subnet levels. "ddns-override-no-update": false, // Suffix appended to the partial name sent to the DNS. The // default value is an empty string, which indicates that no // suffix is appended. It may be specified at the global, // shared-network, and subnet levels. "ddns-qualifying-suffix": "", // Enumeration specifying whether the server should honor // the hostname or Client FQDN sent by the client or replace // this name. The acceptable values are: "never" (use the // name the client sent), "always" (replace the name the // client sent), "when-present" (replace the name the client // sent, but do not generate one when the client didn't send // the name), "when-not-present" (generate the name when // client didn't send one, otherwise leave the name the // client sent). The default value is "never". It may be // specified at the global, shared-network, and subnet levels. "ddns-replace-client-name": "never", // Boolean flag which enables or disables DDNS updating. It // defaults to true. It may be specified at the global, shared- // network, and subnet levels. It works in conjunction with // dhcp-ddns:enable-updates, which must be true to enable connectivity // to kea-dhcp-ddns. "ddns-send-updates": true, // Boolean flag, which when true instructs the server to always // update DNS when leases are renewed, even if the DNS information // has not changed. The server's default behavior (i.e. flag is false) // is to only update DNS if the DNS information has changed. It // may be specified at the global, shared-network, and subnet levels. "ddns-update-on-renew": true, // Boolean flag which is passed to kea-dhcp-ddns with each DDNS // update request, to indicate whether DNS update conflict // resolution as described in RFC 4703 should be employed for the // given update request. The default value for this flag is true. // It may be specified at the global, shared-network, and subnet levels. // This field has been replaced by ddns-conflict-resolution-mode. // Parsing is maintained only for backwards compatibility. // "ddns-use-conflict-resolution": true, // Enumeration, which is passed to kea-dhcp-ddns with each DDNS // update request to indicate the mode used for resolving conflicts // while performing DDNS updates. The acceptable values are: // check-with-dhcid (this includes adding a DHCID record and checking // that record via conflict detection as per RFC 4703, // no-check-with-dhcid (this will ignore conflict detection but add // a DHCID record when creating/updating an entry), // check-exists-with-dhcid (this will check if there is an existing // DHCID record but does not verify the value of the record matches // the update. This will also update the DHCID record for the entry), // no-check-without-dhcid (this ignores conflict detection and will // not add a DHCID record when creating/updating a DDNS entry). // The default value is "check-with-dhcid". It may be // specified at the global, shared-network and subnet levels. "ddns-conflict-resolution-mode": "check-with-dhcid", // When greater than 0.0, it is the percent of the lease's lifetime // to use for the DNS TTL. "ddns-ttl-percent": 0.75, // Time in seconds specifying how long a declined lease should be // excluded from DHCP assignments. The default value is 24 hours. "decline-probation-period": 86400, // Name Change Request forwarding configuration for the Kea DHCPv6 server. // NCRs are sent to the Kea D2 module to update DNS upon allocation of // DHCP leases. "dhcp-ddns": { // Boolean flag indicating whether Kea DHCPv6 server should connect to // kea-dhcp-ddns. This must be true for NCRs to be created and // sent to kea-dhcp-ddns. By default, NCRs are not generated. "enable-updates": false, // Specifies maximum number of NCRs to queue waiting to be sent // to the Kea D2 server. "max-queue-size": 1024, // Packet format to use when sending NCRs to the Kea D2 server. // Currently, only JSON format is supported. "ncr-format": "JSON", // Socket protocol to use when sending NCRs to D2. Currently, // only UDP is supported. "ncr-protocol": "UDP", // IP address that the Kea DHCPv6 server should use to send // NCRs to D2. The default value of zero indicates that Kea // should pick a suitable address. "sender-ip": "::1", // Port number that the Kea DHCPv6 server should use to send // NCRs to D2. The default value of zero indicates that Kea // should pick a suitable port. "sender-port": 0, // IP address on which D2 listens for NCRs. "server-ip": "::1", // Port number on which D2 listens for NCRs. "server-port": 53001, // The following parameters are DEPRECATED. They have been // replaced with parameters that may be set at the global, // shared-network, and subnet6 scopes. They are listed here // as configuration parsing still accepts them. Eventually // support for them will be removed. "generated-prefix": "myhost", "hostname-char-replacement": "x", "hostname-char-set": "[^A-Za-z0-9.-]", "override-client-update": false, "override-no-update": false, "qualifying-suffix": "", "replace-client-name": "never" }, // Specifies the first of the two consecutive ports of the UDP // sockets used for communication between DHCPv6 and DHCPv4 // servers. See RFC 7341. "dhcp4o6-port": 0, // Collection of Kea DHCPv6 server parameters configuring how // the server should process expired DHCP leases. "expired-leases-processing": { // Specifies the number of seconds since the last removal of // the expired leases, when the next removal should occur. // If both "flush-reclaimed-timer-wait-time" and // "hold-reclaimed-time" are not 0, when the client sends a release // message the lease is expired instead of being deleted from // lease storage. "flush-reclaimed-timer-wait-time": 25, // Specifies the length of time in seconds to keep expired // leases in the lease database (lease affinity). // If both "flush-reclaimed-timer-wait-time" and // "hold-reclaimed-time" are not 0, when the client sends a release // message the lease is expired instead of being deleted from // lease storage. "hold-reclaimed-time": 3600, // Specifies the maximum number of expired leases that can be // processed in a single attempt to clean up expired leases // from the lease database. If there are more // expired leases, they will be processed during the next // cleanup attempt. "max-reclaim-leases": 100, // Specifies the maximum time in milliseconds that a single attempt // to clean up expired leases from the lease database may take. "max-reclaim-time": 250, // Specifies the length of time in seconds since the last attempt // to process expired leases before initiating the next attempt. "reclaim-timer-wait-time": 10, // Specifies the maximum number of expired lease-processing cycles // which didn't result in full cleanup of exired leases from the // lease database, after which a warning message is issued. "unwarned-reclaim-cycles": 5 }, // List of hook libraries and their specific configuration parameters // to be loaded by Kea DHCPv4 server. "hooks-libraries": [ { // Location of the hook library to be loaded. "library": "/opt/lib/kea/hooks/libdhcp_lease_cmds.so", // Hook library-specific configuration parameters. "parameters": { } } ], // List of access credentials to external sources of IPv6 reservations, "hosts-databases": [ { // Name of the database to connect to. "name": "keatest", // Host on which the database resides. "host": "localhost", // Database password. "password": "keatest", // Port on which the database is available. "port": 3306, // Type of database, e.g. "mysql", "postgresql". "type": "mysql", // Username to be used to access the database. "user": "keatest", // Read-only mode. "readonly": false, // The next entries are for OpenSSL support in MySQL. // Trust anchor aka certificate authority file or directory. "trust-anchor": "my-ca", // Client certificate file name. "cert-file": "my-cert", // Private key file name. "key-file": "my-key", // Cipher list (see the OpenSSL ciphers command manual). "cipher-list": "AES", // Connection reconnect wait time. // This parameter governs how long Kea waits before attempting // to reconnect. Expressed in milliseconds. The default is 0 // (disabled) for MySQL and PostgreSQL. "reconnect-wait-time": 3000, // Connection maximum reconnect tries. "max-reconnect-tries": 3, // Action to take when connection recovery fails. // Supported values: stop-retry-exit, serve-retry-exit, // serve-retry-continue "on-fail": "stop-retry-exit", // Connection connect timeout in seconds. "connect-timeout": 100, // Timeout of database read operations in seconds. "read-timeout": 120, // Timeout of database write operations in seconds. "write-timeout": 180 }, { // Name of the database to connect to. "name": "keatest", // Host on which the database resides. "host": "localhost", // Database password. "password": "keatest", // Port on which the database is available. "port": 5432, // Type of database, e.g. "mysql", "postgresql". "type": "postgresql", // Username to be used to access the database. "user": "keatest", // TCP user timeout while communicating with the database. // It is specified in seconds. "tcp-user-timeout": 100 } ], // List of host reservation identifier types to be used by the // Kea DHCPv6 server to fetch static reservations for // DHCP clients. All identifiers are used by default, which // means that the server will issue multiple queries to the // database to find if there is a reservation for a particular // client. If a particular deployment uses only a subset, e.g. // one identifier type, this identifier should be only listed // here to prevent unnecessary queries to the database. "host-reservation-identifiers": [ "hw-address", "duid", "flex-id" ], // Specifies configuration of interfaces on which the Kea DHCPv6 // server is listening to the DHCP queries. "interfaces-config": { // Specifies a list of interfaces on which the Kea DHCPv6 // server should listen to DHCP requests. "interfaces": [ "eth0" ], // Boolean flag indicating whether the available interfaces should // be re-detected upon server reconfiguration. The default value // is true, which means that the interfaces are always // re-detected. "re-detect": true, // Kea tries to bind the service sockets during initialization, but it may // fail due to a port being already opened or a misconfiguration. Kea can // suppress these errors and only log them. This flag prevents starting // the DHCP server without binding all sockets. If unspecified, it // defaults to false. "service-sockets-require-all": true, // Kea tries to bind the service sockets during initialization. This // option specifies how many times binding to interface will be retried. // The default value is 0, which means that the operation will not be // repeated. "service-sockets-max-retries": 5, // The time interval in milliseconds to wait before the next attempt to // retry opening a service socket. "service-sockets-retry-wait-time": 5000 }, // Boolean parameter which controls whether an early global host // reservations lookup should be performed. This lookup takes place // before subnet selection and when a global reservation is found // with some client classes, it triggers a second phase classification. // It can also be used to drop queries using host reservations as a // decision table indexed by reservation identifiers. "early-global-reservations-lookup": true, // Boolean parameter which controls the DHCP server's behavior with respect // to creating host reservations for the same IP address or delegated // prefix. By default this flag is set to true in which case the server // prevents creation of multiple host reservations for the same IP address // or delegated prefix. When this parameter is set to false, the server // allows for creating multiple reservations for the same IP address or // delegated prefix within a subnet. This setting is useful in deployments // in which a given host may be communicating with a DHCP server over // multiple interfaces and depending on the chosen interface different // MAC address (or other identifier) will be used to identify the host. // Note that some host backends do not support the mode in which multiple // reservations for the same IP address or delegated prefix are used. // If these backends are in use and this setting is attempted a // configuration error will occur. The MySQL and PostgreSQL backends do // support this mode. "ip-reservations-unique": true, // Boolean parameter which controls whether host reservations lookup // should be performed before lease lookup. This parameter has effect // only when multi-threading is disabled. When multi-threading is // enabled, host reservations lookup is always performed first to avoid // lease-lookup resource locking. "reservations-lookup-first": true, // Specifies credentials to access lease database. "lease-database": { // memfile backend-specific parameter specifying the interval // in seconds at which the lease file should be cleaned up (outdated // lease entries are removed to prevent the lease file from growing // infinitely). "lfc-interval": 3600, // Maximum number of lease-file read errors allowed before // loading the file is abandoned. Defaults to 0 (no limit). "max-row-errors": 100, // Name of the lease file. In the case of a database it specifies the // database name. "name": "/tmp/kea-dhcp6.csv", // memfile-specific parameter indicating whether leases should // be saved on persistent storage (disk) or not. The true value // is the default and it indicates that leases are stored in // persistent storage. This setting must be used in production. // The false value should only be used for testing purposes // because non-stored leases will be lost upon Kea server restart. "persist": true, // Lease database backend type, i.e. "memfile", "mysql" or // "postgresql". "type": "memfile" }, // List of parameters indicating how the client's MAC address can be // inferred from the DHCP query. Supported values are listed in the // Kea Administrator Reference Manual. "mac-sources": [ "duid" ], // List of global DHCP options that the Kea DHCPv6 server assigns to // clients. "option-data": [ { // Boolean flag indicating whether the given option is always // sent in response or only when requested. The default // value of false indicates that it is only sent when // requested. "always-send": false, // Option code. It is not required if the option name is // provided. "code": 23, // Boolean value indicating whether the option data specified // in the "data" field is specified as a string of hexadecimal // digits or in human-readable CSV format. "csv-format": true, // Option data to be stored in the option payload. "data": "2001:db8:2::45, 2001:db8:2::100", // Option name. It is not required if the option code is // provided. "name": "dns-servers", // Boolean flag indicating whether the given option is never // sent in response. The default value of false indicates // that it is sent when it should be. When true, the option // is not sent despite any other setting, i.e. it is // a final flag. "never-send": false, // Option space. The default is the "dhcp6" option space which // groups top-level DHCPv6 options. "space": "dhcp6" } ], // List of global option definitions, i.e. option formats, that the // Kea DHCPv6 server is using. "option-def": [ { // Boolean flag indicating whether the option definition comprises // an array of values of some type, e.g. an array of IPv6 addresses. // The default value of false means that the option does not // comprise an array of values. "array": false, // Option code. "code": 6, // Holds a name of the option space encapsulated by this option. // All options that belong to this option space will be sent // as sub-options of this option. An empty string means that this // option doesn't encapsulate any option. "encapsulate": "", // Option name. "name": "my-option", // Specifies the types of fields within the option if the option // is said to be a "record" (see "type"). In this particular example // this option comprises two fields, 1 byte and 2 bytes long. "record-types": "uint8, uint16", // Name of the option space to which this option belongs. "space": "my-space", // Option type. All possible types are listed in the Kea // Administrator Reference Manual. "type": "record" } ], // Global value which limits the number of client packets (e.g. // REQUESTs,RENEWs...) that may be parked while waiting for // hook library work to complete, prior to a response (e.g. REPLY) // being sent back to the client. A typical example is when kea-dhcp6 // parks a REQUEST while it sends the lease update(s) to its // HA peer(s). The packet is unparked once the update(s) have been // acknowledged. This value limits the number of packets that can // be held pending the updates. In times of heavy client traffic, // this value can keep kea-dhcp6 from building an insurmountable // backlog of updates. "parked-packet-limit": 128, // Global (default) value of the preferred lifetime. "preferred-lifetime": 50, // Global min value of the preferred lifetime. "min-preferred-lifetime": 40, // Global max value of the preferred lifetime. "max-preferred-lifetime": 60, // Global value for the rebind timer, i.e. the time after which the // DHCP client enters the rebind state if it fails to renew the lease. "rebind-timer": 40, // List of relay supplied option codes. See RFC 6422. "relay-supplied-options": [ "110", "120", "130" ], // Global value for the renew timer, i.e. the time after which the // DHCP client renews the lease. "renew-timer": 30, // Global value to store extended information (e.g. relay agent // information) with each lease. "store-extended-info": true, // Statistics keep some samples per observation point. // There are two default values: maximum count and maximum age. // Setting the maximum count to zero disables it. "statistic-default-sample-count": 0, // When the maximum count is 0 the maximum age (in seconds) applies. "statistic-default-sample-age": 60, // Multi-threading parameters. "multi-threading": { // By default, Kea processes packets on multiple threads if the hardware permits. "enable-multi-threading": true, // When multi-threading is enabled, Kea will process packets on a // number of multiple threads configurable through this option. The // value must be a positive integer (0 means auto-detect). "thread-pool-size": 0, // When multi-threading is enabled, Kea will read packets from the // interface and append a working item to the thread pool. This // option configures the maximum number of items that can be queued. // The value must be a positive integer (0 means unlimited). "packet-queue-size": 0 }, // Governs how the Kea DHCPv6 server should deal with invalid // data received from the client. "sanity-checks": { // Specifies how the Kea DHCPv6 server should behave when invalid // data is read for a lease from the lease file. The following // values are supported: "none" (don't attempt to correct the // lease information), "warn" (print a warning for subnet-id // related inconsistencies), "fix" (correct the subnet id by // trying to find the suitable subnet), "fix-del" (similar // to "fix" but delete the lease if no suitable subnet found), // "del" (delete the lease if the lease has invalid subnet // identifier value). "lease-checks": "warn", // Specifies how Kea DHCPv4 server should behave when invalid // extended info is read for a lease from the lease file, or // whether to upgrade from the old format. The following values // are supported: "none" (don't attempt to correct or upgrade // the extended info), "fix" (fix common inconsistencies and // upgrade from the old format; this is the default), "strict" // (fix inconsistencies with an impact on Leasequery), // "pedantic" (enforce full Kea code format). "extended-info-checks": "fix" }, // Custom DUID used by the DHCPv6 server. "server-id": { // Type of the DUID. Possible values are "LLT", "EN", and "LL". "type": "EN", // Enterprise id used for "EN" duid. "enterprise-id": 2495, // Identifier part of the DUID. "identifier": "0123456789", // Boolean flag indicating whether the DUID should be persisted on // disk. "persist": false }, // List of shared networks used by the Kea DHCPv6 server. The shared // networks group subnets together. "shared-networks": [ { // A flag selecting an IP address allocation strategy for all // subnets in this shared network. "allocator": "random", // A flag selecting a delegated prefix allocation strategy for // all subnets in this shared network. "pd-allocator": "iterative", // Restricts this shared network to allow only clients // that belong to a particular client class. If an // empty string is provided, no restriction is applied. "client-class": "", // Shared-network level value. See description at the global level. "ddns-generated-prefix": "myhost", // Shared-network level value. See description at the global level. "ddns-override-client-update": false, // Shared-network level value. See description at the global level. "ddns-override-no-update": false, // Shared-network level value. See description at the global level. "ddns-qualifying-suffix": "", // Shared-network level value. See description at the global level. "ddns-replace-client-name": "never", // Shared-network level value. See description at the global level. "ddns-send-updates": true, // Shared-network level value. See description at the global level. "ddns-update-on-renew": true, // Shared-network level value. See description at the global level. // This field has been replaced by ddns-conflict-resolution-mode. // Parsing is maintained only for backwards compatibility. // "ddns-use-conflict-resolution": true, // Shared-network level value. See description at the global level. "ddns-conflict-resolution-mode": "check-with-dhcid", // Shared-network level value. See description at the global level. "ddns-ttl-percent": 0.65, // Shared-network level value. See description at the global level. "hostname-char-replacement": "x", // Shared-network level value. See description at the global level. "hostname-char-set": "[^A-Za-z0-9.-]", // Specifies that this shared network is selected for // requests received on a particular interface. "interface": "eth0", // Specifies the content of the interface-id option used // by relays to identify the interface on the relay to // which the response is sent. "interface-id": "", // Shared network name. "name": "my-secret-network", // List of shared network-specific DHCP options. "option-data": [], // Shared network-specific (default) preferred lifetime. "preferred-lifetime": 2000, // Shared network-specific min preferred lifetime. "min-preferred-lifetime": 1500, // Shared network-specific ma xpreferred lifetime. "max-preferred-lifetime": 2500, // Boolean flag indicating whether the server can respond to // a Solicit message including a Rapid Commit option with // the Reply message (See DHCPv6 rapid commit). "rapid-commit": false, // List of IPv6 relay addresses for which this shared // network is selected. "relay": { "ip-addresses": [] }, // Shared-network level rebind timer. "rebind-timer": 41, // Shared-network level renew timer. "renew-timer": 31, // Shared-network level compute T1 and T2 timers. "calculate-tee-times": true, // T1 = valid lifetime * .5. "t1-percent": .5, // T2 = valid lifetime * .75. "t2-percent": .75, // Cache threshold = valid lifetime * .25. "cache-threshold": .25, // Cache maximum: when the client last-transmission time // is close enough, the lease is not renewed and the current // lease is returned as it was "cached". "cache-max-age": 1000, // Enumeration specifying the server's mode of operation when it // fetches host reservations. // "reservation-mode": "all", // It is replaced by the "reservations-global", // "reservations-in-subnet", and "reservations-out-of-pool" // parameters. // Specify whether the server should look up global reservations. "reservations-global": false, // Specify whether the server should look up in-subnet reservations. "reservations-in-subnet": true, // Specify whether the server can assume that all reserved addresses // are out-of-pool. // Ignored when reservations-in-subnet is false. // If specified, it is inherited by "subnet6" levels. "reservations-out-of-pool": false, // List of client classes which must be evaluated when this shared // network is selected for client assignments. "require-client-classes": [ "late" ], // Turn off storage of extended information (e.g. relay agent // information) with each lease for this shared network. "store-extended-info": false, // List of IPv6 subnets belonging to this shared network. "subnet6": [ { // A flag selecting an IP address allocation strategy for // the subnet. "allocator": "iterative", // A flag selecting a delegated prefix allocation strategy // for the subnet. "pd-allocator": "iterative", // Restricts this subnet to allow only clients that belong // to a particular client class. If an empty string is // provided, no restriction is applied. "client-class": "", // Subnet-level value. See description at the global level. "ddns-generated-prefix": "myhost", // Subnet-level value. See description at the global level. "ddns-override-client-update": false, // Subnet-level value. See description at the global level. "ddns-override-no-update": false, // Subnet-level value. See description at the global level. "ddns-qualifying-suffix": "", // Subnet-level value. See description at the global level. "ddns-replace-client-name": "never", // Subnet-level value. See description at the global level. "ddns-send-updates": true, // Subnet-level value. See description at the global level. "ddns-update-on-renew": true, // Subnet-level value. See description at the global level. // This field has been replaced by ddns-conflict-resolution-mode. // Parsing is maintained only for backwards compatibility. // "ddns-use-conflict-resolution": true, // Subnet-level value. See description at the global level. "ddns-conflict-resolution-mode": "check-with-dhcid", // Subnet-level value. See description at the global level. "ddns-ttl-percent": 0.55, // Subnet-level value. See description at the global level. "hostname-char-replacement": "x", // Subnet-level value. See description at the global level. "hostname-char-set": "[^A-Za-z0-9.-]", // Subnet unique identifier. "id": 1, // Specifies that this subnet is selected for requests // received on a particular interface. "interface": "eth0", // Specifies the content of the interface-id option used // by relays to identify the interface on the relay to // which the response is sent. "interface-id": "", // Turn on storage of extended information (e.g. relay agent // information) with each lease for this subnet. "store-extended-info": true, // Subnet-level list of DHCP options. "option-data": [ { // Boolean flag indicating whether the particular option // should be always sent or sent only when requested. "always-send": false, // Option code. "code": 7, // Boolean flag indicating whether the option value specified // in "data" is a string of hexadecimal values or human-readable // CSV value. "csv-format": false, // Option data to be included in the option payload. "data": "0xf0", // Option name. "name": "preference", // Boolean flag indicating whether the given option is never // sent in response. "never-send": false, // Option space. The default value "dhcp6" designates the // top level option space. "space": "dhcp6" } ], // List of pools from which delegated prefixes are assigned to the // clients. "pd-pools": [ { // Restricts this prefix pool to be used only for the client // requests belonging to a particular client class. "client-class": "phones_server1", // Length of prefixes delegated to clients. "delegated-len": 64, // Excluded prefix (address) from client assignments. "excluded-prefix": "2001:db8:1::", // Excluded prefix (length) from client assignments. "excluded-prefix-len": 72, // Prefix pool level list of DHCP options. "option-data": [], // Prefix range (address) used for client assignments. "prefix": "2001:db8:1::", // Prefix range (length) used for client assignments. "prefix-len": 48, // List of client classes which must be evaluated // when this prefix pool is selected for client assignments. "require-client-classes": [] } ], // List of IP address pools belonging to the subnet. "pools": [ { // Restricts this pool to only be used for client // requests belonging to a particular client class. "client-class": "phones_server1", // Pool-level list of DHCP options. "option-data": [], // Address range used for client assignments. "pool": "2001:db8:0:1::/64", // List of client classes which must be evaluated when this pool // is selected for client assignments. "require-client-classes": [ "late" ] }, { // Restricts this pool to only be used for client // requests belonging to a particular client class. "client-class": "phones_server2", // Pool-level list of DHCP options. "option-data": [], // Address range used for client assignments. "pool": "2001:db8:0:3::/64", // List of client classes which must be evaluated when this pool // is selected for client assignments. "require-client-classes": [], // Pool identifier used to enable statistics for this pool. // The pool ID does not need to be unique within the subnet // or across subnets. // If not unconfigured, it defaults to 0. The statistics // regarding this pool will be combined with the other statistics // of all other pools with the same pool ID in this subnet. "pool-id": 1 } ], // Subnet specific (default) preferred lifetime. "preferred-lifetime": 2000, // Subnet specific min preferred lifetime. "min-preferred-lifetime": 1500, // Subnet specific max referred lifetime. "max-preferred-lifetime": 2500, // Boolean flag indicating whether the server can respond to // a Solicit message including a Rapid Commit option with // the Reply message (See DHCPv6 rapid commit). "rapid-commit": false, // Subnet-level value of the rebind timer. "rebind-timer": 40, // List of IPv6 relay addresses for which this subnet is selected. "relay": { "ip-addresses": [ "2001:db8:0:f::1" ] }, // Subnet-level renew timer. "renew-timer": 30, // Enumeration specifying the server's mode of operation when it // fetches host reservations. // "reservation-mode": "all", // It is replaced by the "reservations-global", // "reservations-in-subnet", and // "reservations-out-of-pool" parameters. // Specify whether the server should look up global reservations. "reservations-global": false, // Specify whether the server should look up in-subnet reservations. "reservations-in-subnet": true, // Specify whether the server can assume that all reserved // addresses are out-of-pool. // Ignored when reservations-in-subnet is false. "reservations-out-of-pool": false, // Subnet-level compute T1 and T2 timers. "calculate-tee-times": true, // T1 = valid lifetime * .5. "t1-percent": .5, // T2 = valid lifetime * .75. "t2-percent": .75, // Cache threshold = valid lifetime * .25. "cache-threshold": .25, // Subnet-level cache maximum. "cache-max-age": 1000, // List of static IPv6 reservations assigned to clients belonging // to this subnet. For a detailed example, see reservations.json. "reservations": [ { // Identifier used for client matching. Supported values are // "duid", "hw-address" and "flex-id". "duid": "01:02:03:04:05:06:07:08:09:0A", // List of reserved IPv6 addresses. "ip-addresses": [ "2001:db8:1:cafe::1" ], // List of reserved IPv6 prefixes. "prefixes": [ "2001:db8:2:abcd::/64" ], // Reserved hostname. "hostname": "foo.example.com", // Reservation-specific option data. "option-data": [ { // Option name. "name": "vendor-opts", // Option value. "data": "4491" } ] } ], // List of client classes which must be evaluated when this subnet // is selected for client assignments. "require-client-classes": [ "late" ], // Subnet prefix. "subnet": "2001:db8::/32", // Subnet-level (default) valid lifetime. "valid-lifetime": 6000, // Subnet-level min valid lifetime. "min-valid-lifetime": 4000, // Subnet-level max valid lifetime. "max-valid-lifetime": 8000 } ], // Shared-network level (default) valid lifetime. "valid-lifetime": 6001, // Shared-network level min valid lifetime. "min-valid-lifetime": 4001, // Shared-network level max valid lifetime. "max-valid-lifetime": 8001 } ], // List of IPv6 subnets which don't belong to any shared network. "subnet6": [], // Global valid lifetime value. "valid-lifetime": 6000, // Global min valid lifetime value. "min-valid-lifetime": 4000, // Global max valid lifetime value. "max-valid-lifetime": 8000, // Reservations (examples are in other files). "reservations": [], // Configuration control (currently not used, i.e. this syntax // is already defined but the corresponding feature is not implemented). "config-control": { // Only the configuration databases entry is defined. "config-databases": [ { // Name of the database to connect to. "name": "config", // Type of database, e.g. "mysql", "postgresql". "type": "mysql" } ], // Interval between attempts to fetch configuration updates // via the configuration backends used. "config-fetch-wait-time": 30 }, // Server tag. "server-tag": "my DHCPv6 server", // DHCP queue-control parameters. "dhcp-queue-control": { // Enable queue is mandatory. "enable-queue": true, // Queue type is mandatory. "queue-type": "kea-ring6", // Capacity is optional. "capacity": 64 }, // Fetches host reservations. // "reservation-mode": "all", // It is replaced by the "reservations-global", // "reservations-in-subnet", and "reservations-out-of-pool" parameters. // Specify whether the server should look up global reservations. "reservations-global": false, // Specify whether the server should look up in-subnet reservations. "reservations-in-subnet": true, // Specify whether the server can assume that all reserved addresses // are out-of-pool. // Ignored when reservations-in-subnet is false. // If specified, it is inherited by "shared-networks" and // "subnet6" levels. "reservations-out-of-pool": false, // Data directory. "data-directory": "/tmp", // Global compute T1 and T2 timers. "calculate-tee-times": true, // T1 = valid lifetime * .5. "t1-percent": .5, // T2 = valid lifetime * .75. "t2-percent": .75, // Cache threshold = valid lifetime * .25. "cache-threshold": .25, // Global cache maximum. "cache-max-age": 1000, // String of zero or more characters with which to replace each // invalid character in the Client FQDN. The default // value is an empty string, which will cause invalid characters // to be omitted rather than replaced. "hostname-char-replacement": "x", // Regular expression describing the invalid character set in // the Client FQDN. "hostname-char-set": "[^A-Za-z0-9.-]", // List of loggers used by the servers using this configuration file. "loggers": [ { // Debug level, a value between 0..99. The greater the value // the more detailed the debug log. "debuglevel": 99, // Name of the logger. "name": "kea-dhcp6", // Configures how the log should be output. "output_options": [ { // Determines whether the log should be flushed to a file. "flush": true, // Specifies maximum filesize before the file is rotated. "maxsize": 10240000, // Specifies the maximum number of rotated files to be kept. "maxver": 1, // Specifies the logging destination. "output": "stdout", // Specifies log entry content "pattern": "%D{%Y-%m-%d %H:%M:%S.%q} %-5p [%c/%i] %m\n" } ], // Specifies logging severity, i.e. "ERROR", "WARN", "INFO", "DEBUG". "severity": "INFO" } ], // Look at advanced examples for the use of user-contexts. "user-context": { } } }