On 8/13/12 12:00 PM, James Hogarth wrote: > Are you allowing ICMPv6? I don't just mean echo and echo-reply (the > pings above) but most of the rest of it too? Yes, the test system has the default ip6tables, but we always permit icmp: # Firewall configuration written by system-config-firewall # Manual customization of this file is not recommended. *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT -A INPUT -p ipv6-icmp -j ACCEPT -A INPUT -i lo -j ACCEPT -A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT -A INPUT -j REJECT --reject-with icmp6-adm-prohibited -A FORWARD -j REJECT --reject-with icmp6-adm-prohibited COMMIT