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| author | Harout Hedeshian <harouth@codeaurora.org> | 2015-01-20 18:06:05 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-01-25 23:54:41 +0100 |
| commit | c2943f14534bdc4230f4da6dcd4ea03c5d8c8162 (patch) | |
| tree | 1ff92b3129af4b9b711063cf2caf5c14e64fb4b4 /Documentation/networking | |
| parent | Merge branch 'fib_trie_next' (diff) | |
| download | linux-c2943f14534bdc4230f4da6dcd4ea03c5d8c8162.tar.xz linux-c2943f14534bdc4230f4da6dcd4ea03c5d8c8162.zip | |
net: ipv6: Add sysctl entry to disable MTU updates from RA
The kernel forcefully applies MTU values received in router
advertisements provided the new MTU is less than the current. This
behavior is undesirable when the user space is managing the MTU. Instead
a sysctl flag 'accept_ra_mtu' is introduced such that the user space
can control whether or not RA provided MTU updates should be applied. The
default behavior is unchanged; user space must explicitly set this flag
to 0 for RA MTUs to be ignored.
Signed-off-by: Harout Hedeshian <harouth@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/networking')
| -rw-r--r-- | Documentation/networking/ip-sysctl.txt | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt index 85b022179104..a5e4c813f17f 100644 --- a/Documentation/networking/ip-sysctl.txt +++ b/Documentation/networking/ip-sysctl.txt @@ -1287,6 +1287,13 @@ accept_ra_rtr_pref - BOOLEAN Functional default: enabled if accept_ra is enabled. disabled if accept_ra is disabled. +accept_ra_mtu - BOOLEAN + Apply the MTU value specified in RA option 5 (RFC4861). If + disabled, the MTU specified in the RA will be ignored. + + Functional default: enabled if accept_ra is enabled. + disabled if accept_ra is disabled. + accept_redirects - BOOLEAN Accept Redirects. |