root@x2 ~ # lsmod | grep own
ipt_owner               6400  0
ip_tables              35096  12 ipt_owner,iptable_nat,ipt_length,ipt_ttl,ipt_tcpmss,ipt_TCPMSS,iptable_mangle,iptable_filter,ipt_multiport,ipt_limit,ipt_tos,ipt_REJECT
root@x2 ~ # vzctl enter 103
Warning: Unknown iptable module: ipt_owner, skipped
entered into VE 103

2.6.9-023stab044.4-smp

 18:37:34  up 3 days, 21:24,  0 users,  load average: 0.26, 0.23, 0.14

LANG=C
root@p4 / # iptables -I OUTPUT -m owner --uid-owner=110 -j ACCEPT
iptables: No chain/target/match by that name