Hi, I am currently evaluating BIRD, and stumbled on some difficulty, which looks quite similar to the one encountered by Łukasz here: http://www.mail-archive.com/[email protected]/msg01039.html
In my case, it's l2tpns [1] that generates additional routes on a tun interface, and that get ignored by BIRD. As Ondrej showed, the reason why BIRD does that is because Linux IPv6 supposedly don't distinguish between “native” device routes and user defined one. And, as the comment tells us, the best way to fix that is to set the protocol on the added routes to something correct when adding them (which wouldn't be static in my case, but rather something else like “l2tp” on a custom proto #). I'm working on patching l2tpns to do that. Still, I wondered why this comment was here, because on my linux 3.0 box, “native” routes are actually set as “proto kernel”. I tested on a 2.6.32, and it's also the case. But no luck on a 2.6.26. So, I searched in the kernel git, and found the culprit : commit 4f72427998b105392e60bae7a6798a0c96fe4f0a which can be viewed here http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=4f72427998b105392e60bae7a6798a0c96fe4f0a This dates back to may 2009, and coincidentally was done to please quagga ;-) And it appeared juste before 2.6.30. On the BIRD side, it's commit ff2857b03db854f99902766ad842aaa5fa29ec3c that included the workaround to ignore all PROTO_BOOT routes. See here https://git.nic.cz/redmine/projects/bird/repository/revisions/ff2857b03db854f99902766ad842aaa5fa29ec3c And it actually happened after the kernel charge, in february 2010! So, I was wondering if you would consider getting back to the “old” behavior of not ignoring PROTO_BOOT routes on kernel >= 2.6.30? It would be quite a change, still, and it may look strange that BIRD behave differently on kernel before and after 2.6.30. But it would help people like me who struggled to get their routes taken into account, just to find after a painful search that it's because of a kernel “bug”. I don't know what's the right answer to this, but I wanted to inform you of this change in Linux's behavior, in case you didn't notice it. Regard, Benjamin [1] http://sourceforge.net/projects/l2tpns/
