On 6/4/20 12:22, Philip Homburg wrote:
However, when a packet from an "off-link" network is employed, the
sending node has no way of knowing where to send the packet, unless it
simply swaps the src and dst mac addresses, and uses the source address
of the packet as the destination addresses.
No, a node can just use the normal IPv6 send mechnisms to send a NA
message. If the destination is off-link then the packet gets sent to the
default router.
Agreed. I missed this. Although there might be corner cases where this
doesn't apply -- i.e., for some reason you have no routes.
But yes: use normal IPv6 send mechanisms. And also probably motivate
that nodes use the address of the sending interface (strong-end system
model, per RFC1122).
Thanks,
--
Fernando Gont
e-mail: ferna...@gont.com.ar || fg...@si6networks.com
PGP Fingerprint: 7809 84F5 322E 45C7 F1C9 3945 96EE A9EF D076 FFF1
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