Loopback interface as OSPF stub interface (IPv6)

[Kenth Eriksson]

> 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?