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| author | Erik Nordmark <nordmark@arista.com> | 2016-12-02 23:00:08 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-12-04 05:21:37 +0100 |
| commit | adc176c5472214971d77c1a61c83db9b01e9cdc7 (patch) | |
| tree | 3eec6bc43480aac7ef49ac829c8da68028eebcdb /include/net/if_inet6.h | |
| parent | Merge branch 'mv88e6390-batch-three' (diff) | |
| download | linux-adc176c5472214971d77c1a61c83db9b01e9cdc7.tar.xz linux-adc176c5472214971d77c1a61c83db9b01e9cdc7.zip | |
ipv6 addrconf: Implemented enhanced DAD (RFC7527)
Implemented RFC7527 Enhanced DAD.
IPv6 duplicate address detection can fail if there is some temporary
loopback of Ethernet frames. RFC7527 solves this by including a random
nonce in the NS messages used for DAD, and if an NS is received with the
same nonce it is assumed to be a looped back DAD probe and is ignored.
RFC7527 is enabled by default. Can be disabled by setting both of
conf/{all,interface}/enhanced_dad to zero.
Signed-off-by: Erik Nordmark <nordmark@arista.com>
Signed-off-by: Bob Gilligan <gilligan@arista.com>
Reviewed-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/if_inet6.h')
| -rw-r--r-- | include/net/if_inet6.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/if_inet6.h b/include/net/if_inet6.h index b0576cb2ab25..0fa4c324b713 100644 --- a/include/net/if_inet6.h +++ b/include/net/if_inet6.h @@ -55,6 +55,7 @@ struct inet6_ifaddr { __u8 stable_privacy_retry; __u16 scope; + __u64 dad_nonce; unsigned long cstamp; /* created timestamp */ unsigned long tstamp; /* updated timestamp */ |