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Re: Using /126 for IPv6 router links
- From: Jim Burwell
- Date: Wed Jan 27 10:40:05 2010
On 1/26/2010 23:32, Mark Smith wrote:
>
> A minor data point to this, Linux looks to be implementing the
> subnet-router anycast address when IPv6 forwarding is enabled, as it's
> specifying Solicited-Node multicast address membership for the
> all zeros node address in it's MLD announcements when an interface
> comes up.
>
>
Yes, I believe you are correct. It appears to be implemented. When I
ping the subnet anycast from a Linux or Windows XP box I get a reply
from the IPv6 router on my LAN. The router is a Linux box running
Kernel 2.6.31. Interestingly, on a Linux box, the ping6 command shows
the router's unicast address answering the pings (same goes for ping6
under Cygwin on a Windows box). But on a Windows box ping shows the
anycast address answering. However, in both cases packet captures show
it actually is the unicast address of the router answering, which I
believe is the expected behavior. Windows ping just shows the wrong
address for whatever reason.
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