>From: Su Thunder <[EMAIL PROTECTED]> >Date: 2006/09/26 Tue AM 10:53:59 CDT >To: [email protected] >Subject: A question about Source Address of IP Field of ND Packets(RFC2461)
>The Source Address of Router Solicitation Message is specified in section >4.1 as follows: > IP Fields: > > Source Address > An IP address assigned to the sending interface, or > the unspecified address if no address is assigned > to the sending interface. >My question is, why not specify whether the Source Address is link-local >address or other type when it is not the unspecified address?And when to >use which type?Or it must be link-local address as the one of the Router >Advertisement Message? >The same problem occurs in the same field of Neighbor Solicitation >Message,Neighbor Advertisement Message. Unless there is no address assigned to a sending interface (in which case the SA would be ::), I can't think of a reason for any ND message to require the SA be anything but link-local in scope. As a general rule (and perhaps going beyond the intended scope of the original e-mail), RFC 3484 section 5 provides guidance for source address selection. Further, section 10.1 of that same spec provides what are IMO good examples thereof. Best Regards, Tim Enos Rom 8:28 > > > >-------------------------------------------------------------------- >IETF IPv6 working group mailing list >[email protected] >Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6 >-------------------------------------------------------------------- -------------------------------------------------------------------- IETF IPv6 working group mailing list [email protected] Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
