Microsoft Forefront Threat Management Gateway aka TMG
Technet :
IPv6 traffic is not supported by Forefront TMG (except for DirectAccess).
Filtering of IPv6 traffic is not supported, and all IPv6 traffic is blocked by default.
pfSense
Ticket Feature #177 :
IPv6 support needs to be added at some point (post-2.0)
m0n0wall v.1.32
IPv6 supported – LAN / WAN – fw rules etc. etc.