Recently we upgraded our gateway/NAT boxes to an active/active setup using OpenBSD/CARP. Because it's active/active - the IP used for the gateway is multicast.
It seems that after the change, every FreeBSD host on the network (physical and virtual - 9.x and 10-CURRENT) cannot
If we point FreeBSD to the individual nodes in the cluster - it works fine, but the CARP IP - it just doesn't work. Even a basic install - no firewalls or anything enabled - exhibits the same behavior.
We've tried everything we know of - I've found nothing in
I've searched the forums/Google and haven't found anything that helps (I've seen stuff regarding similar issues with certain load balancing setups, but none have helped). Does anyone know a solution or has had this problem before? We can work around it - but we would rather use the HA/CARP IP than individual nodes in the cluster.
Cheers and thanks,
-bp
It seems that after the change, every FreeBSD host on the network (physical and virtual - 9.x and 10-CURRENT) cannot
ping
/ traceroute
/etc. - let alone actually connect through the gateway via IPv4 (we don't use IPv6 internally - so it hasn't been tried). More so - it seems completely isolated to FreeBSD. Everything from NetBSD, OpenBSD, Linux, OS X, Ubiquiti APs, VXwork, and even Windows all work fine. No issues. If we point FreeBSD to the individual nodes in the cluster - it works fine, but the CARP IP - it just doesn't work. Even a basic install - no firewalls or anything enabled - exhibits the same behavior.
We've tried everything we know of - I've found nothing in
sysctl
that seems to help. The only error we get - and it's spewing to the logs pretty constantly is:
Code:
in_arp: 01:00:5e:00:01:06 is multicast (which, we of course know)
I've searched the forums/Google and haven't found anything that helps (I've seen stuff regarding similar issues with certain load balancing setups, but none have helped). Does anyone know a solution or has had this problem before? We can work around it - but we would rather use the HA/CARP IP than individual nodes in the cluster.
Cheers and thanks,
-bp