Additional data point -- I've built temporary production FTP load balancers with CentOS 6, and they work properly. The firewall is disabled here too. Here's the "uname -a" output of the online machine:
Linux lb5 2.6.32-504.16.2.el6.centos.plus.x86_64 #1 SMP Wed Apr 22 00:59:31 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1453180 Title: Passive FTP is not handled properly by the ip_vs_ftp module To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1453180/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
