On Fri, May 07, 2021 at 11:14:27AM +0000, Joakim Tjernlund wrote: > On Fri, 2021-05-07 at 13:09 +0200, Ondrej Zajicek wrote: > > On Fri, May 07, 2021 at 04:53:44AM +0000, Senthil Kumar Nagappan wrote: > > > Hi Joakim, > > > Thanks for your response. > > > Will try to elaborate point2 with sample config. > > > 1. Config at Router R1 > > > lo interfaceinterface loopback lo has ip addr 100.100.100.125 > > > eth1for unnumbered borrowing the lo address for eth1 and 100.100.100.126 > > > is the peer addressip addr add 100.100.100.125 peer 100.100.100.126 dev > > > eth1 > > > eth2for unnumbered borrowing the lo address for eth2 and 100.100.100.126 > > > is the peer addressip addr add 100.100.100.125 peer 100.100.100.126 dev > > > eth2 > > > 2. Config at Router R2Its identical to R1 config except for the loopback > > > ip which is 100.100.100.126 and the correspondingpeer address config for > > > eth1 and eth2 > > > > > > 3. Enable ospf on eth1 and eth2 at R1 and R2 > > > 4. Only one of the ospf adj will become FULL either over eth1 or eth2 and > > > not both > > > 5. Since the peer address configurations adds a route to other end > > > loopback address and since thedb packets are sent as unicast, route > > > lookup happens and db packets wont be sent out from one of the links. > > > > I do not think that should be true (at least on Linux). OSPF sockets are > > bound to specific interface using SO_BINDTODEVICE and use SO_DONTROUTE to > > avoid route lookups, so even unicast packets should be sent to specific > > interface. If that really happens, that is worth investigating. What is > > your OS and BIRD version? Did you verify that using tcpdump or similar > > tool? > > > > That may be so, but I still think that the issue reported in 1) is valid bug, > don't you?
Yes, i agree. Just think that this issue is worth investigating independently and not just avoiding that by fixing 1). -- Elen sila lumenn' omentielvo Ondrej 'Santiago' Zajicek (email: santi...@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."
