On Wed, 9 Feb 2011, Iljitsch van Beijnum wrote:
I've been telling people for years that with IPv6, you don't need a
global scope address on an interface. The routing protocols use link
locals, so they don't care. And should an ICMP message need to be
generated, the source address is filled in with a global scope address
borrowed from another interface that does have one.
I think it is part of source address selection:
destination is global scope, then the source should be global scope as
well.
However, I can't find any documentation for this behavior. Is there an RFC that
specifies this as part of normal IPv6 router behavior?
I think this behaviour is not the router behaviour, but the router as a
host. ICMP messages are generated by the host software. Which interface's
global address is selected is depend probably on router software. e.g.
first interface index with global address.
You can make it consistent with Cisco e.g.:
ipv6 unnumbered <specific interface>
Best Regards,
Janos Mohacsi
Head of HBONE+ project
Network Engineer, Deputy Director of Network Planning and Projects
NIIF/HUNGARNET, HUNGARY
Key 70EF9882: DEC2 C685 1ED4 C95A 145F 4300 6F64 7B00 70EF 9882
Thanks,
Iljitsch
--------------------------------------------------------------------
IETF IPv6 working group mailing list
[email protected]
Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6
--------------------------------------------------------------------
--------------------------------------------------------------------
IETF IPv6 working group mailing list
[email protected]
Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6
--------------------------------------------------------------------
