a.Address.Af = ip_types.AddressFamily(buf.DecodeUint8())
copy(a.Address.Un.XXX_UnionData[:], buf.DecodeBytes(16))
a.Len = buf.DecodeUint8()
a.Address.Af = ip_types.AddressFamily(buf.DecodeUint8())
copy(a.Address.Un.XXX_UnionData[:], buf.DecodeBytes(16))
a.Len = buf.DecodeUint8()