kern/117293: CARP interfaces causes packet loss
kl at vsen.dk
Thu Oct 18 03:50:01 PDT 2007
>Synopsis: CARP interfaces causes packet loss
>Arrival-Date: Thu Oct 18 10:50:01 UTC 2007
>Originator: Klavs Klavsen
FreeBSD carptest01.example.dk 6.2-RELEASE-p7 FreeBSD 6.2-RELEASE-p7 #8: Tue Oct 16 16:11:14 CEST 2007 root at buildhost.example.dk:/usr/obj/usr/src/sys/ExampleFW i386
fping (and ping -f) pinging through the firewall, gives me
a packet loss. fping in nagios, reports up to 55% packet loss :( - a ping
-f gives me 1-3%, but bad enough :(
pinging from the firewall itself, to one of the hosts, that packets are
lost to (when pinging from other networks) does not give any packet loss.
If I disable the CARP config in /etc/rc.conf.local, using the same firewall rules (except for changing the $if vars back to bge0/em0 etc.) the packet loss is gone.
I did not have a backup (CARP wise) host running during my tests.
More information about the freebsd-bugs