[#225] Added ddsn-ttl-percent parameter

kea-dhcp4/6 both now support ddns-ttl-percent
at the global, shared-network, and subnet scopes.
If specified it is the percentage of the lease
lifetime to send to D2.

Not yet supported by CB.

modified:
doc/examples/kea4/all-keys.json
doc/examples/kea6/all-keys.json
src/bin/dhcp4/dhcp4_lexer.cc
src/bin/dhcp4/dhcp4_lexer.ll
src/bin/dhcp4/dhcp4_parser.cc
src/bin/dhcp4/dhcp4_parser.h
src/bin/dhcp4/dhcp4_parser.yy
src/bin/dhcp4/json_config_parser.cc
src/bin/dhcp4/location.hh
src/bin/dhcp6/dhcp6_lexer.cc
src/bin/dhcp6/dhcp6_lexer.ll
src/bin/dhcp6/dhcp6_parser.cc
src/bin/dhcp6/dhcp6_parser.h
src/bin/dhcp6/dhcp6_parser.yy
src/bin/dhcp6/dhcp6_srv.cc
src/bin/dhcp6/json_config_parser.cc
src/bin/dhcp6/location.hh
src/bin/dhcp6/tests/fqdn_unittest.cc
src/lib/dhcpsrv/cfg_globals.cc
src/lib/dhcpsrv/cfg_globals.h
src/lib/dhcpsrv/dhcpsrv_messages.cc
src/lib/dhcpsrv/dhcpsrv_messages.h
src/lib/dhcpsrv/dhcpsrv_messages.mes
src/lib/dhcpsrv/ncr_generator.cc
src/lib/dhcpsrv/ncr_generator.h
src/lib/dhcpsrv/network.cc
src/lib/dhcpsrv/network.h
src/lib/dhcpsrv/parsers/base_network_parser.cc
src/lib/dhcpsrv/parsers/base_network_parser.h
src/lib/dhcpsrv/parsers/simple_parser4.cc
src/lib/dhcpsrv/parsers/simple_parser6.cc
src/lib/dhcpsrv/srv_config.cc
src/lib/dhcpsrv/srv_config.h
src/lib/dhcpsrv/tests/ncr_generator_unittest.cc
src/lib/dhcpsrv/tests/network_unittest.cc
src/lib/dhcpsrv/tests/srv_config_unittest.cc

2 files changed, 20 insertions, 0 deletions

diff --git a/doc/examples/kea4/all-keys.json b/doc/examples/kea4/all-keys.json
index 005438ecb0..6d6375893e 100644
--- a/doc/examples/kea4/all-keys.json
+++ b/doc/examples/kea4/all-keys.json
@@ -214,6 +214,10 @@
         // It may be specified at the global, shared-network and subnet levels.
         "ddns-use-conflict-resolution": true,
 
+        // 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,
@@ -772,6 +776,9 @@
                 "ddns-use-conflict-resolution": true,
 
                 // Shared network level value. See description at the global level.
+                "ddns-ttl-percent": 0.75,
+
+                // Shared network level value. See description at the global level.
                 "hostname-char-replacement": "x",
 
                 // Shared network level value. See description at the global level.
@@ -911,6 +918,9 @@
                         "ddns-use-conflict-resolution": true,
 
                         // Subnet level value. See description at the global level.
+                        "ddns-ttl-percent": 0.75,
+
+                        // Subnet level value. See description at the global level.
                         "hostname-char-replacement": "x",
 
                         // Subnet level value. See description at the global level.
diff --git a/doc/examples/kea6/all-keys.json b/doc/examples/kea6/all-keys.json
index 74c7a60f8c..83c2449f7c 100644
--- a/doc/examples/kea6/all-keys.json
+++ b/doc/examples/kea6/all-keys.json
@@ -164,6 +164,10 @@
         // It may be specified at the global, shared-network and subnet levels.
         "ddns-use-conflict-resolution": true,
 
+        // 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,
@@ -713,6 +717,9 @@
                 "ddns-use-conflict-resolution": true,
 
                 // 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.
@@ -844,6 +851,9 @@
                         "ddns-use-conflict-resolution": true,
 
                         // 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.