AddrIpv6 handles addressing for IPv6Header
Int32 :a1 Int32 :a2 Int32 :a3 Int32 :a4
Reads in a string and casts it as an IPv6 address
Reads in a colon-delimited hex string and casts it as an IPv6 address.
Returns the address as a fairly ginormous integer.
Returns the address in string format.
Returns the address as a colon-delimited hex string.
[Validate]