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ipv6: add flowlabel_consistency sysctl

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With the introduction of IPV6_FL_F_REFLECT, there is no guarantee of
flow label unicity. This patch introduces a new sysctl to protect the old
behaviour, enable by default.

Changelog of V3:
 * rename ip6_flowlabel_consistency to flowlabel_consistency
 * use net_info_ratelimited()
 * checkpatch cleanups

Signed-off-by: Florent Fourcot <florent.fourcot@enst-bretagne.fr>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florent Fourcot
2014-01-17 17:15:05 +01:00
committed by David S. Miller
parent 46e5f40176
commit 6444f72b4b
5 changed files with 25 additions and 0 deletions
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8
Documentation/networking/ip-sysctl.txt
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@@ -1118,6 +1118,14 @@ bindv6only - BOOLEAN
Default: FALSE (as specified in RFC3493)
flowlabel_consistency - BOOLEAN
Protect the consistency (and unicity) of flow label.
You have to disable it to use IPV6_FL_F_REFLECT flag on the
flow label manager.
TRUE: enabled
FALSE: disabled
Default: TRUE
anycast_src_echo_reply - BOOLEAN
Controls the use of anycast addresses as source addresses for ICMPv6
echo reply