Hi misc@, Unrelated to my last email, except that the server in queston is the same, I have a master/backup setup with three CARP interfaces (on each server.) One pair of the interfaces is going dual master and the other two are not. Thus my issue appears to be with the backup server.
In the process of diagnosing this I upgraded from 7.8 to 7.9, and have identical behavior in both. Both master and backup have sysctl net.inet.carp.preempt=1 set. I altered this and it had no impact. carp0: This is connected to em0 on both servers. The configuration looks like this on the master: vhid 14 pass (password) carpdev em0 Backup only differs by the addition of: advskew 10 carp1: This is connected to em1 on both servers. This is the interface that is giving me grief. carp1's configuration looks like: vhid 15 pass (password) carpdev em1 Backup just has advskew 10 added. Lastly, to help diagnose, I made carp2: vhid 16 pass (password) carpdev em1 Again, with advskew 10 added on the backup. carp0 and carp2 work perfectly well. carp1 works on the backup, except that it rapidly goes into a master state. I have tried changing passwords on carp1. I have adjusted the skew time. It just ends up in master when the other master is online, which causes problems. I can't suspect PF because carp0 and carp2 work fine. There's no PF specific rules for the CARP interfaces. It doesn't seem interface related because carp1 and carp2 are on the exact same physical interfaces. Is there something obvious that I am missing? Let me know if I should share any other details. Thank you! -Slow Servers
