Loopback interface as OSPF stub interface (IPv6)

[Ondrej Zajicek]

On Wed, May 05, 2021 at 02:50:18PM +0000, Kenth Eriksson wrote:
> Tried setting a loopback interface as an IPv6 OSPF stub interface, but this is not picked up as an OSPF interface. Doing the same on IPv4 loopback interface picks it up as an OSPF interface and announcing it as a stub in the area. Why not for IPv6?

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.

-- 
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."