Unnumbered interfaces and OSPF

Ondrej Zajicek santiago at crfreenet.org
Thu Jun 26 12:39:00 CEST 2014

On Thu, Jun 26, 2014 at 11:27:26AM +0200, Vincent Bernat wrote:
> Hi!
> I am trying to use unnumbered interfaces and OSPF.

Currently, you have to use peer addresses for unnumbered
interfaces in OSPF:

On one router:

ip addr add peer dev eth0

On the other:

ip addr add peer dev eth0

Although generally you could use the same pair on both interfaces,
i don't know if i tested such case and if there are no hidden
problems related to this.

Also note that addresses of unnumbered interfaces are not propagated
by default, So you would also need some regular or loopback/stub
interface added to OSPF:

ip addr add dev lo

Elen sila lumenn' omentielvo

Ondrej 'Santiago' Zajicek (email: santiago at crfreenet.org)
OpenPGP encrypted e-mails preferred (KeyID 0x11DEADC3, wwwkeys.pgp.net)
"To err is human -- to blame it on a computer is even more so."
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