root@k226741:/home/alexander# iptables -N foo
root@k226741:/home/alexander# iptables -A foo -m state --state RELATED,ESTABLISHED -j ACCEPT
iptables: No chain/target/match by that name
root@k226741:/home/alexander# iptables -A foo -j ACCEPT
root@k226741:/home/alexander# iptables -L foo
Chain foo (0 references)
target     prot opt source               destination
ACCEPT     all  --  anywhere             anywhere
root@k226741:/home/alexander#