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| author | Johannes Berg <johannes.berg@intel.com> | 2016-02-04 13:31:18 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-02-11 10:27:35 +0100 |
| commit | 97daf331455077645ae1f13438bebd3d1a2e94ee (patch) | |
| tree | 9e3ef43daf0d899896592a8bc1ffa65c9c9849fa /Documentation/networking | |
| parent | ipv4: add option to drop unicast encapsulated in L2 multicast (diff) | |
| download | linux-97daf331455077645ae1f13438bebd3d1a2e94ee.tar.xz linux-97daf331455077645ae1f13438bebd3d1a2e94ee.zip | |
ipv4: add option to drop gratuitous ARP packets
In certain 802.11 wireless deployments, there will be ARP proxies
that use knowledge of the network to correctly answer requests.
To prevent gratuitous ARP frames on the shared medium from being
a problem, on such deployments wireless needs to drop them.
Enable this by providing an option called "drop_gratuitous_arp".
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/networking')
| -rw-r--r-- | Documentation/networking/ip-sysctl.txt | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt index d5910d63214d..a53bbfaff1c7 100644 --- a/Documentation/networking/ip-sysctl.txt +++ b/Documentation/networking/ip-sysctl.txt @@ -1223,6 +1223,12 @@ drop_unicast_in_l2_multicast - BOOLEAN 1122, but is disabled by default for compatibility reasons. Default: off (0) +drop_gratuitous_arp - BOOLEAN + Drop all gratuitous ARP frames, for example if there's a known + good ARP proxy on the network and such frames need not be used + (or in the case of 802.11, must not be used to prevent attacks.) + Default: off (0) + tag - INTEGER Allows you to write a number, which can be used as required. |