pfSense

Add the rtadvd deamon to advertise the routing. We still need to make a proper config file if we want it to advertise the Carp IP instead of the interface IP
Also added safety guard for empty dhcp configs

Make sure that if either v4 or v6 dhcp servers are enabled that is_dhcp_enabled() will trigger

Add the dhcpv6 server service page.

Update services.inc for configuring isc dhcp server 4.1 with ipv6 subnet support. Much configuration needs validation.
There is no router option support, this needs to be handled by the router advertisement deamon. Perhaps this should be coupled to enabling DHCPv6....

Add the dhcpv6 server menu item and allow for configuration

Add the ipv6 address and subnet onto the existing ifinfo array until the pfsense module supports it

Check against static configurations which can be staticv4 staticv6 or staticv4v6

Allow for creation of a ipv6 tunnel for he.net by creating a gif interface. This is the recommended procedure as advised by he.net
This allows for using ipv6 local and remote addresses, you will need to add a ipv6 default gateway on the routing tab

Switch over the IPv6 functions from IPv6.inc, these are from the PHP PEAR library

up the subnet bits from 32 to 128 so that the access can be locked down to the host for ipv6.
This will require a javascript routine that prevents a subnet mask higher then 32 bits for a ipv4 address.

Alternatively the subnet bits should be steered by javascript to prevent use of more then 32 bits on a ipv4 address. When a hostname is used all bets are off, even worse if the hostname is a combined ipv4/ipv6.