Re: Forwarding Packets With Link Local Destination Addresses
神明達哉 <jinmei@wide.ad.jp> Fri, 08 January 2021 14:41 UTC
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From: 神明達哉 <jinmei@wide.ad.jp>
Date: Fri, 08 Jan 2021 06:40:53 -0800
Message-ID: <CAJE_bqfpAS0rM4NKuiVu679Dj5f1zYU7iF7ujriiRnM1CYQN-A@mail.gmail.com>
Subject: Re: Forwarding Packets With Link Local Destination Addresses
To: Carsten Bormann <cabo@tzi.org>
Cc: Ron Bonica <rbonica=40juniper.net@dmarc.ietf.org>, Fernando Gont <fgont@si6networks.com>, "6man@ietf.org" <6man@ietf.org>
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At Fri, 8 Jan 2021 10:45:03 +0100, Carsten Bormann <cabo@tzi.org> wrote: > > could allow the following: > > > > - A node sends a packet with a routing header that would route the > > packet to a global address (D1) and then to a link-local (final) > > destination (D2). > > - The packet leaves the source link and is delivered to the interface > > corresponding to the global address D1. > > - The receiving node now sets D2 as the destination address of the > > IPv6 header and forwards the packet to the link where the packet is > > delivered to D2 (so it does not forward the packet to "other link”). > > This is about a hypothetical, but: > How would it know which of its many links that is? It would be "the link where the packet is delivered to D2". > (And how exactly would D2 reply?) It's tricky (and nearly impossible in practice) as RFC 4007 explains: [...] This will help the receiving node send a "response" packet with the final destination of the received packet as the source address without breaking its source zone. -- JINMEI, Tatuya
- Re: Forwarding Packets With Link Local Destinatio… 神明達哉
- Forwarding Packets With Link Local Destination Ad… Ron Bonica
- RE: Forwarding Packets With Link Local Destinatio… Ron Bonica
- Re: Forwarding Packets With Link Local Destinatio… Fred Baker
- Re: Forwarding Packets With Link Local Destinatio… Alexandre Petrescu
- Re: Forwarding Packets With Link Local Destinatio… Fred Baker
- Re: Forwarding Packets With Link Local Destinatio… Alexandre Petrescu
- Re: Forwarding Packets With Link Local Destinatio… Toerless Eckert
- Re: Forwarding Packets With Link Local Destinatio… Brian E Carpenter
- Re: Forwarding Packets With Link Local Destinatio… Fernando Gont
- Re: Forwarding Packets With Link Local Destinatio… Gyan Mishra
- Re: Forwarding Packets With Link Local Destinatio… 神明達哉
- Re: Forwarding Packets With Link Local Destinatio… Alejandro Acosta
- Re: Forwarding Packets With Link Local Destinatio… 神明達哉
- Re: Forwarding Packets With Link Local Destinatio… Alexandre Petrescu
- Re: Forwarding Packets With Link Local Destinatio… Carsten Bormann
- Re: Forwarding Packets With Link Local Destinatio… Philip Homburg
- Re: Forwarding Packets With Link Local Destinatio… Markku Savela
- Re: Forwarding Packets With Link Local Destinatio… 神明達哉
- NATLL6 [was Re: Forwarding Packets With Link Loca… Brian E Carpenter
- Re: NATLL6 [was Re: Forwarding Packets With Link … Fernando Gont
- Re: NATLL6 [was Re: Forwarding Packets With Link … Brian E Carpenter
- Re: NATLL6 [was Re: Forwarding Packets With Link … Alejandro Acosta
- Re: NATLL6 [was Re: Forwarding Packets With Link … Alejandro Acosta