ip6tables addrtype module missing in RHEL5 and 6

Issue

• There is a no match module for the addrtype in ip6tables.
• This module is required for supporting IPv6 in traffic distribution device(Load Balance) which based on RHEL. Use to control the traffic in specific addrtype.
• In ip6tables and iptable, addrtype module of the match extension should be supported in the same way.

# ip6tables -I INPUT -m addrtype --addrtype UNSPEC -j ACCEPT