From: YOSHIFUJI Hideaki <hideaki.yoshif...@miraclelinux.com>
Date: Thu, 30 Jul 2015 15:34:21 +0900
> Hangbin Liu wrote:
>> Commit 6fd99094de2b ("ipv6: Don't reduce hop limit for an interface")
>> disabled accept hop limit from RA if it is smaller than the current hop
>> limit for security stuff. But this behavior kind of break the RFC definition.
>>
>> RFC 4861, 6.3.4. Processing Received Router Advertisements
>> A Router Advertisement field (e.g., Cur Hop Limit, Reachable Time,
>> and Retrans Timer) may contain a value denoting that it is
>> unspecified. In such cases, the parameter should be ignored and the
>> host should continue using whatever value it is already using.
>>
>> If the received Cur Hop Limit value is non-zero, the host SHOULD set
>> its CurHopLimit variable to the received value.
>>
>> So add sysctl option accept_ra_min_hop_limit to let user choose the minimum
>> hop limit value they can accept from RA. And set default to 1 to meet RFC
>> standards.
>>
>> Signed-off-by: Hangbin Liu <liuhang...@gmail.com>
>
> Acked-by: YOSHIFUJI Hideaki <hideaki.yoshif...@miraclelinux.com>
Applied, thanks everyone.
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