[afripv6-discuss] Internet broken - v6 :-(

[Alain Patrick AINA]

> my internet is broken. (maybe few days now) and below are the reasons i
> send this to the v6 list.

> gentooserver ~ # traceroute6 www.isc.org
> traceroute to www.isc.org (2001:4f8:0:2::d) from
> 2002:c1dc:3a1b:1:20a:e6ff:fef0:a2b3, 30 hops max, 16 byte packets
>  1  2002:c1dc:3a1b:1:219:6ff:fe22:ed48
> (2002:c1dc:3a1b:1:219:6ff:fe22:ed48)  0.809 ms  0.712 ms  0.572 ms
>  2  2002:c058:6301:: (2002:c058:6301::)  608.218 ms *  603.301 ms
>  3  ssc-stk-px.occaid.net (2001:4830:d0::2)  584.238 ms *  653.467 ms
>  4  2002:c058:6301:: (2002:c058:6301::)  554.441 ms  595.575 ms  588.404 ms
>  5  ssc-stk-px.occaid.net (2001:4830:d0::2)  596.315 ms  576.923 ms
> 587.58 ms
>  6  2002:c058:6301:: (2002:c058:6301::)  556.329 ms  615.539 ms *
>  7  ssc-stk-px.occaid.net (2001:4830:d0::2)  574.396 ms  823.758 ms
> 615.745 ms

You are tracing from a 6to4(2002:c1dc:3a1b:1:20a:e6ff:fef0:a2b3) through a 
6to4 relay to a "native" IPv6 (2001:4f8:0:2::d). Remember that you your 
destination path depend on the "native" v6 domains served by the relay and 
the scope of 2002::/16 announce.

and using the anycasted 6to4 relay, has its own issues:

RFC 3068 section 3

" Anycast routing is known to cause operational issues: since the
   sending 6to4 router does not directly identify the specific 6to4
   relay router to which it forwards the packets, it is hard to identify
   the responsible router in case of failure, in particular when the
   failure is transient or intermittent.  Anycast solutions must thus
   include adequate monitoring of the routers performing the service, in
   order to promptly detect and correct failures, and also adequate
   fault isolation procedures, in order to find out the responsible
   element when needed, e.g., following a user's complaint. "



hope this helps

--alain