Ron, > On Dec 1, 2019, at 2:47 PM, Ron Bonica <rbon...@juniper.net> wrote: > > Mark, Bob, > > Yes, I agree that routers should not forward packets with link local source > addresses.
or Destination addresses. > > Pablo, > > Maybe we should update section 4.2 of the network programming draft to > reflect this? I was thinking that unless network programming has text that might cause one to think it overrides the defined behavior from rfc4291 for link-local addresses, I am not sure it has to be mentioned. Bob > > Ron > > > From: Mark Smith <markzzzsm...@gmail.com> > Sent: Sunday, December 1, 2019 5:31 PM > To: Bob Hinden <bob.hin...@gmail.com> > Cc: Ron Bonica <rbon...@juniper.net>; SPRING WG <spring@ietf.org> > Subject: Re: [spring] SRv6 Network Programming and Link Local Source Addresses > > > > On Mon, 2 Dec 2019, 08:35 Bob Hinden, <bob.hin...@gmail.com> wrote: > Ron, > > > On Nov 30, 2019, at 12:36 PM, Ron Bonica > > <rbonica=40juniper....@dmarc.ietf.org> wrote: > > > > Pablo, > > > > > > > > Consider the packet (SA,DA) (S3, S2, S1; SL) where: > > > > > > > > • SA is link-local (fe80) > > • DA, S3, S2, and S1 are all END.X > > > > > > Section 4.2 suggests that this packet will be delivered over multiple hops > > to its destination, regardless of its link-local source address. > > I would think that RFC2460 Section 2.5.6. "Link-Local IPv6 Unicast Addresses” > covers this: > > Link-Local addresses are for use on a single link. Link-Local > addresses have the following format: > > | 10 | > | bits | 54 bits | 64 bits | > +----------+-------------------------+----------------------------+ > |1111111010| 0 | interface ID | > +----------+-------------------------+----------------------------+ > > Link-Local addresses are designed to be used for addressing on a > single link for purposes such as automatic address configuration, > neighbor discovery, or when no routers are present. > > Routers must not forward any packets with Link-Local source or > destination addresses to other links. > > I think that's RFC4291. > > RFC4007, "IPv6 Scoped Address Architecture" does too, more generally and > probably more formally, in particular section 9, "Forwarding". > > Regards, > Mark. > > > > Bob > > > > > > > > > > Is this the case? > > > > > > > > Ron > > > > > > > > > > > > > > > > > > > > > > Juniper Business Use Only > > _______________________________________________ > > spring mailing list > > spring@ietf.org > > https://www.ietf.org/mailman/listinfo/spring > > _______________________________________________ > spring mailing list > spring@ietf.org > https://www.ietf.org/mailman/listinfo/spring > > Juniper Business Use Only
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