> Something similar was discussed in this thread: > http://marc.info/?t=145999355300008&r=1&w=2
Ah nice, interesting read! I googled quite a lot but that thread didn't came up. Guess I need to work on my Google-foo. As discussed in that thread there is no one size fits all. Maybe a sysctl variable which determines how OpenBSD deals with routing to dead interfaces would be an option? > Maybe a setup without carp on the interfaces towards your upstream would > work better? But I can not tell based on the information you provide. I've fixed the problem by merging the traffic with the help of 2 layer 2.5 switches in an MLAG in front of the OpenBSD gateways. Kind regards, Jasper > Op 31 oktober 2016 om 22:02 schreef Remi Locherer <remi.loche...@relo.ch>: > > On Sun, Oct 30, 2016 at 12:36:12PM +0100, Jasper Siepkes wrote: > > Hi all, > > > > I've got a question about how OpenBSD deals with routes and interfaces > > that are considerd 'down'. I've noticed that when an interface in > > OpenBSD is down the route to that interface will remain in the routing > > table and is also not flagged with R(eject). The route stays exactly > > the same wheter the device is up or down. > > > > In Linux (and I have no idea wheter this is a good idea or not) the > > route of the downed interface is removed. > > Something similar was discussed in this thread: > http://marc.info/?t=145999355300008&r=1&w=2 > > OpenBSD behaves different to what I know from routers I work with. There > a route disapears when I shut an interface. > > > Is the above behavior normal? WHat should I do if I don't want to > > route traffic to downed interfaces (like backup CARP interfaces). > > > > The reason why I'm asking is because I want to route traffic somewhere > > else with ifstated when a device goes in CARP backup mode (upstream > > uses ECMP routing). But because the device route of the downed > > interface (the interface being a CARP interface in backup mode in this > > scenario) stays in the routing table with priority 1 I can't > > override it. > > Maybe a setup without carp on the interfaces towards your upstream would > work better? But I can not tell based on the information you provide. > > Remi
