IPv6 is not supported

[alexvasiu]

@bat-serjo IPv6 doesn't work

t.addr = (socket.AF_INET6, '2001:db8:0:0:0:ff00:42:8329')
  File "/workspace/PyIface/pyiface/iface.py", line 314, in addr
    ifr.data.ifr_addr = self.__sockaddrFromTuple(val)
  File "/workspace/PyIface/pyiface/iface.py", line 365, in __sockaddrFromTuple
    inVal[1]))
TypeError: expected in6_u instance, got bytes

Also If I try to get addr for an interface it never returns IPv6 address, only IPv4 or None