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Re: Using /126 for IPv6 router links
From: Jim Burwell <jimb () jsbc cc>
Date: Wed, 27 Jan 2010 07:39:34 -0800
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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Current thread:
- Re: Using /126 for IPv6 router links, (continued)
- Re: Using /126 for IPv6 router links Matthew Petach (Jan 25)
- Re: Using /126 for IPv6 router links Richard A Steenbergen (Jan 25)
- Re: Using /126 for IPv6 router links Mathias Seiler (Jan 25)
- RE: Using /126 for IPv6 router links Matt Addison (Jan 25)
- RE: Using /126 for IPv6 router links Igor Gashinsky (Jan 26)
- Re: Using /126 for IPv6 router links Steve Bertrand (Jan 26)
- Re: Using /126 for IPv6 router links Grzegorz Janoszka (Jan 27)
- RE: Using /126 for IPv6 router links TJ (Jan 27)
- RE: Using /126 for IPv6 router links Pekka Savola (Jan 26)
- Re: Using /126 for IPv6 router links Mark Smith (Jan 26)
- Re: Using /126 for IPv6 router links Jim Burwell (Jan 27)
- Re: Using /126 for IPv6 router links Matthew Petach (Jan 25)
- RE: Using /126 for IPv6 router links Igor Gashinsky (Jan 27)
- Re: Using /126 for IPv6 router links Steve Bertrand (Jan 27)
- Re: Using /126 for IPv6 router links Igor Gashinsky (Jan 27)
- Re: Using /126 for IPv6 router links Dale W. Carder (Jan 27)
- Re: Using /126 for IPv6 router links David Barak (Jan 28)
- Re: Using /126 for IPv6 router links Igor Gashinsky (Jan 28)
- Re: Using /126 for IPv6 router links Bill Stewart (Jan 29)
- Re: Using /126 for IPv6 router links Leo Bicknell (Jan 25)
- Re: Using /126 for IPv6 router links Owen DeLong (Jan 25)
- Re: Using /126 for IPv6 router links Christopher Morrow (Jan 25)