When tried to migrate VM from CentOS 5.11 Final to CentOS 6.6 Final, this error happend:

Code:
Restoring container ...
vzquota : (warning) Quota is running for id 1110 already
Container is mounted
        undump...
Setting CPU limit: 80
Setting CPU units: 1000
Setting CPUs: 2
Restore error, undump failed: Invalid argument
Error: iptables-restore exited with 1
Error: Most probably some iptables modules are not loaded
Error: or CT's iptables utilities are incompatible with this kernel (version is older than 1.4.0)
Error: (Offline migration and iptools upgrade might help).
Error: rst_restore_net: -22
Container restore failed
Container is unmounted
Error: Failed to undump container
reverse mapping checking getaddrinfo for newnodeiphere.static.reverse.asnumberhere.net failed - POSSIBLE BREAK-IN ATTEMPT!
reverse mapping checking getaddrinfo for newnodeiphere.static.reverse.asnumberhere.net failed - POSSIBLE BREAK-IN ATTEMPT!
Resuming...
reverse mapping checking getaddrinfo for newnodeiphere.static.reverse.asnumberhere.net failed - POSSIBLE BREAK-IN ATTEMPT!
vzquota : (error) Quota is not running for id 1110
reverse mapping checking getaddrinfo for newnodeiphere.static.reverse.asnumberhere.net failed - POSSIBLE BREAK-IN ATTEMPT!
reverse mapping checking getaddrinfo for newnodeiphere.static.reverse.asnumberhere.net failed - POSSIBLE BREAK-IN ATTEMPT!
reverse mapping checking getaddrinfo for newnodeiphere.static.reverse.asnumberhere.net failed - POSSIBLE BREAK-IN ATTEMPT!
reverse mapping checking getaddrinfo for newnodeiphere.static.reverse.asnumberhere.net failed - POSSIBLE BREAK-IN ATTEMPT!
mv: cannot stat `/etc/vz/conf/1110.conf.migrated': No such file or directory
Container is already running
Please anyone have idea on how to successfully migrate, go around the error cause?

What worked is when i copied /etc/vz/conf/1110.conf file to new server, then vzctl start 1110 started VPS at new server.

But im unsure on how to discover which iptables modules are missing on new server or what..

On old server /etc/vz/conf/1110.conf file do not have an iptables variable in it

OLD openvz server:
# modprobe -l | grep ipt
/lib/modules/2.6.18-398.el5.028stab116.1/kernel/net/sched/act_ipt.ko
/lib/modules/2.6.18-398.el5.028stab116.1/kernel/drivers/usb/input/aiptek.ko
/lib/modules/2.6.18-398.el5.028stab116.1/kernel/net/ipv4/netfilter/ipt_CLUSTERIP.ko
/lib/modules/2.6.18-398.el5.028stab116.1/kernel/net/ipv4/netfilter/ipt_DSCP.ko
/lib/modules/2.6.18-398.el5.028stab116.1/kernel/net/ipv4/netfilter/ipt_ECN.ko
/lib/modules/2.6.18-398.el5.028stab116.1/kernel/net/ipv4/netfilter/ipt_LOG.ko
/lib/modules/2.6.18-398.el5.028stab116.1/kernel/net/ipv4/netfilter/ipt_MASQUERADE.ko
/lib/modules/2.6.18-398.el5.028stab116.1/kernel/net/ipv4/netfilter/ipt_NETMAP.ko
/lib/modules/2.6.18-398.el5.028stab116.1/kernel/net/ipv4/netfilter/ipt_REDIRECT.ko
/lib/modules/2.6.18-398.el5.028stab116.1/kernel/net/ipv4/netfilter/ipt_REJECT.ko
/lib/modules/2.6.18-398.el5.028stab116.1/kernel/net/ipv4/netfilter/ipt_TCPMSS.ko
/lib/modules/2.6.18-398.el5.028stab116.1/kernel/net/ipv4/netfilter/ipt_TOS.ko
/lib/modules/2.6.18-398.el5.028stab116.1/kernel/net/ipv4/netfilter/ipt_TTL.ko
/lib/modules/2.6.18-398.el5.028stab116.1/kernel/net/ipv4/netfilter/ipt_ULOG.ko
/lib/modules/2.6.18-398.el5.028stab116.1/kernel/net/ipv4/netfilter/ipt_addrtype.ko
/lib/modules/2.6.18-398.el5.028stab116.1/kernel/net/ipv4/netfilter/ipt_ah.ko
/lib/modules/2.6.18-398.el5.028stab116.1/kernel/net/ipv4/netfilter/ipt_dscp.ko
/lib/modules/2.6.18-398.el5.028stab116.1/kernel/net/ipv4/netfilter/ipt_ecn.ko
/lib/modules/2.6.18-398.el5.028stab116.1/kernel/net/ipv4/netfilter/ipt_hashlimit.ko
/lib/modules/2.6.18-398.el5.028stab116.1/kernel/net/ipv4/netfilter/ipt_iprange.ko
/lib/modules/2.6.18-398.el5.028stab116.1/kernel/net/ipv4/netfilter/ipt_owner.ko
/lib/modules/2.6.18-398.el5.028stab116.1/kernel/net/ipv4/netfilter/ipt_recent.ko
/lib/modules/2.6.18-398.el5.028stab116.1/kernel/net/ipv4/netfilter/ipt_tos.ko
/lib/modules/2.6.18-398.el5.028stab116.1/kernel/net/ipv4/netfilter/ipt_ttl.ko
/lib/modules/2.6.18-398.el5.028stab116.1/kernel/net/ipv4/netfilter/iptable_filter.ko
/lib/modules/2.6.18-398.el5.028stab116.1/kernel/net/ipv4/netfilter/iptable_mangle.ko
/lib/modules/2.6.18-398.el5.028stab116.1/kernel/net/ipv4/netfilter/iptable_nat.ko
/lib/modules/2.6.18-398.el5.028stab116.1/kernel/net/ipv4/netfilter/iptable_raw.ko
/lib/modules/2.6.18-398.el5.028stab116.1/kernel/sound/pci/riptide/snd-riptide.ko

NEW openvz server:
# modprobe -l | grep ipt
kernel/drivers/input/tablet/aiptek.ko
kernel/net/sched/act_ipt.ko
kernel/net/ipv4/netfilter/iptable_filter.ko
kernel/net/ipv4/netfilter/iptable_mangle.ko
kernel/net/ipv4/netfilter/iptable_nat.ko
kernel/net/ipv4/netfilter/iptable_raw.ko
kernel/net/ipv4/netfilter/ipt_addrtype.ko
kernel/net/ipv4/netfilter/ipt_ah.ko
kernel/net/ipv4/netfilter/ipt_ecn.ko
kernel/net/ipv4/netfilter/ipt_CLUSTERIP.ko
kernel/net/ipv4/netfilter/ipt_ECN.ko
kernel/net/ipv4/netfilter/ipt_LOG.ko
kernel/net/ipv4/netfilter/ipt_MASQUERADE.ko
kernel/net/ipv4/netfilter/ipt_NETMAP.ko
kernel/net/ipv4/netfilter/ipt_REDIRECT.ko
kernel/net/ipv4/netfilter/ipt_REJECT.ko
kernel/net/ipv4/netfilter/ipt_ULOG.ko



Issue related articles:
http://forum.openvz.org/index.php?t=msg&th=2756&goto=14236&S=0b7b0c94eea1e 4d115b6a57dccc5885c#msg_14236
http://wiki.openvz.org/Migration_fails#Problem_.231
http://realtechtalk.com/Openvz_Live_Migration_Error_Error_undump_failed_In valid_argument_Restoring_failed_Error_iptablesrest ore_exited_with_2_Error_Most_probably_some_iptable s_modules_are_not_loaded_Error_rst_restore_net_22-1034-articles