IPv4 next-hops over IPv6

[Darren O'Connor]

I have used rfc5549 extensively in production, but not with bird. Is that
the same setup you're talking about here?

On Tue, Apr 23, 2024, 09:31 Jay Hanke via Bird-users <bird-users at network.cz>
wrote:

>
>
>> I haven't, but I cannot begin to fathom how that could possibly work.
>>
>
> https://www.ietf.org/archive/id/draft-chroboczek-int-v4-via-v6-01.html
>
>
>> How can the receiving router possibly resolve an IPv4 next-hop address
>> to an destination Ethernet MAC address, if the interface facing the IX
>> does not have any IPv4 addresses assigned?
>>
>
> A router only needs to know the l2 address to forward a frame. So there
> would be no ipv4 address on the transitory network just an ipv6 that
> resolves to a Mac address.
>
> Kind of like ipv4 unnumbered but with ipv6 addresses on the segment.
> Multiprotocol bgp would be used for the next hops.
>
>>
>>
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