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15 changes: 8 additions & 7 deletions zeroconf.py
Original file line number Diff line number Diff line change
Expand Up @@ -1841,7 +1841,7 @@ def normalize_interface_choice(
return result


def new_socket(port: int = _MDNS_PORT, ip_version: IPVersion = IPVersion.V4Only) -> socket.socket:
def new_socket(port: int = _MDNS_PORT, ip_version: IPVersion = IPVersion.V4Only, bind_addr: str = None) -> socket.socket:
if ip_version == IPVersion.V4Only:
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
else:
Expand Down Expand Up @@ -1889,7 +1889,9 @@ def new_socket(port: int = _MDNS_PORT, ip_version: IPVersion = IPVersion.V4Only)
s.setsockopt(_IPPROTO_IPV6, socket.IPV6_MULTICAST_HOPS, 255)
s.setsockopt(_IPPROTO_IPV6, socket.IPV6_MULTICAST_LOOP, True)

s.bind(('', port))
if bind_addr is not None:
s.bind((bind_addr, port))

return s


Expand Down Expand Up @@ -1944,7 +1946,7 @@ def create_sockets(
if unicast:
listen_socket = None
else:
listen_socket = new_socket(ip_version=ip_version)
listen_socket = new_socket(ip_version=ip_version, bind_addr='')

interfaces = normalize_interface_choice(interfaces, ip_version)

Expand All @@ -1954,7 +1956,7 @@ def create_sockets(
if not unicast:
respond_socket = add_multicast_member(listen_socket, i)
else:
respond_socket = new_socket(port=0, ip_version=ip_version)
respond_socket = new_socket(port=0, ip_version=ip_version, bind_addr='')

if respond_socket is not None:
respond_sockets.append(respond_socket)
Expand Down Expand Up @@ -2033,9 +2035,8 @@ def __init__(
self.listener = Listener(self)
if not unicast:
self.engine.add_reader(self.listener, self._listen_socket)
else:
for s in self._respond_sockets:
self.engine.add_reader(self.listener, s)
for s in self._respond_sockets:
self.engine.add_reader(self.listener, s)
self.reaper = Reaper(self)

self.debug = None # type: Optional[DNSOutgoing]
Expand Down