diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2016-02-04 13:31:18 +0100 |
|---|---|---|
| committer | Michael Bestas <mkbestas@lineageos.org> | 2019-12-23 23:43:37 +0200 |
| commit | d3f2cb3d4d3007b74d28c3fc6f9476243730a28e (patch) | |
| tree | 5b985e9cffd9e58a56627af6a104042ddcb2dd78 /Documentation/networking | |
| parent | 1a47124756646bf3f42eab939adccba186ec63bf (diff) | |
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>
(cherry picked from commit 4078228159c9f54cca7347a8bdace29f2abdef65)
Change-Id: I8772dbd7471085878f8b4161eb2a056d79b8b232
Diffstat (limited to 'Documentation/networking')
| -rw-r--r-- | Documentation/networking/ip-sysctl.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt index be536ede2a3a..55492e5564ac 100644 --- a/Documentation/networking/ip-sysctl.txt +++ b/Documentation/networking/ip-sysctl.txt @@ -1236,6 +1236,11 @@ 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. |