221     def __init__(self, source_address, destination_address, payload_length, next_header):  argument
222         self._source_address = self._convert_to_ipaddress(source_address)
234     def source_address(self):  member in IPv6PseudoHeader
237     @source_address.setter
238     def source_address(self, value):  member in IPv6PseudoHeader
251         data += self.source_address.packed
268         source_address,  argument
277         self._source_address = self._convert_to_ipaddress(source_address)
292     def source_address(self):  member in IPv6Header
295     @source_address.setter
296     def source_address(self, value):  member in IPv6Header
312         data += self.source_address.packed
344             self.source_address.compressed,
447             self.ipv6_header.source_address,
944         message_info.source_ipv6 = ipv6_header.source_address