I'm currently working to migrate two linux-2.4/keepalived IPVS
load-balancers to new machine running linux-2.6/keepalived.
Everything works perfectly on the old setup, but on the new machines
the load-balanced FTP fails when the client is behind a NAT
firewall. I'm running the Antefacto ipvs-nfct patch on both the 2.4.26
and 2.6.12 configuration so that the LBs can also function as
firewalls. I have made no changes to the iptables configuration,
other than removing some superfluous rules filtering "unclean" packets,
which aren't supported in 2.6 anyway. All the same IPVS kernel modules
are loaded on both machines. The keepalived configurations are
identical. Any idea what would cause this problem?
Oklahoma Climatological Survey
100 East Boyd St. Room 1210
Norman, OK, 73019