Dear all,
I'd like to draw your attention to a draft I submitted last night -
https://datatracker.ietf.org/doc/draft-ipv6-resolved-gateway/ .
The short version is to get a standardised approach for hosts to send IPv4
traffic to the link layer address of their IPv6 default gateway, bypassing the
need for v4 subnetting and link layer discovery (ARP) to send IPv4 traffic
upstream.
This aligns fully with the current v4-via-v6 efforts that are currently ongoing
inside of the IETF, and extends it to the host level. The approach is to assign
an address from the IPv4 special purpose registry to this end - i.e if this IP
address is found as default gateway, the host should use IPv6 NDP/RA to resolve
the link layer next hop. This can be made fully backward compatible by having
the gateway also send ARP replies for this IP if needed.
I presented on this during RIPE91, currently in Bucharest. Due to
overwhelmingly positive response (and a midnight deadline that I was unaware of
until then) to just submit the I-D in its current rough form.
The presentation can be found here:
https://ripe91.ripe.net/programme/meeting-plan/sessions/10/Y8YVLE/
I would very much like to hear your opinion - I've asked the chair for an
opportunity to present on this at the Montreal meeting.
Kind regards
Remco van Mook
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