Hello,
On Wed, 19 Jun 2013, Kash, Howard M CIV (US) wrote:
> Classification: UNCLASSIFIED
> Caveats: NONE
>
>
> It appears to be an IPv6 routing issue rather than an IPVS issue. With the
> 3.8.8 kernel, the following routes to the real servers appear automatically
> in the routing table:
>
> 2001:x:x:x::30/128 2001:x:x:x::30 UC 0 694882451 2 bond0
> 2001:x:x:x::40/128 2001:x:x:x::40 UC 0 695098682 2 bond0
> 2001:x:x:x::50/128 2001:x:x:x::50 UC 0 870214 2 bond0
>
> With the 3.9.3 kernel these route do not appear, and attempts to send DNS
> queries to the real server from the load balancer give "no route to host"
> errors. Manually adding routes fixes the issue:
>
> route -A inet6 add 2001:x:x:x::30/128 gw 2001:x:x:x::30 dev bond0
> route -A inet6 add 2001:x:x:x::40/128 gw 2001:x:x:x::40 dev bond0
> route -A inet6 add 2001:x:x:x::50/128 gw 2001:x:x:x::50 dev bond0
>
> This seems like a kludge, but I haven't figured out what the root cause of
> the issue is.
Thanks for the explanation. I don't know IPv6 well
enough to comment...
Regards
--
Julian Anastasov <[email protected]>
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