Loopback interface as OSPF stub interface (IPv6)

[Ondrej Zajicek]

On Fri, May 07, 2021 at 11:37:03AM +0000, Kenth Eriksson wrote:
> > OSPFv3 uses link-local addresses, while OSPFv2 uses regular addresses.
> > Loopback has regular address (both IPv4 and IPv6) but does not have link-local address, so it is skipped by OSPFv3 iface scanning code.
> > Perhaps it will work if you attach link-local address to it.
> 
> Correct, when I configured a LL address on the loopback interface it is picked up by bird. But does that make sense? A stub interface does not send packets, so why does it need a LL address? 

Not really. It is just an unintended result of chosen implementation
decisions, same as in unnumbered PtP thread:

https://bird.network.cz/pipermail/bird-users/2021-May/015465.html

-- 
Elen sila lumenn' omentielvo

Ondrej 'Santiago' Zajicek (email: santiago at crfreenet.org)
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"To err is human -- to blame it on a computer is even more so."