An IPv4 unspecified address, "0.0.0.0", or an IPv6 unspecified address "::" inside a bind()
call.
This implies attempt to bind all network interfaces.
Unspecified address literals are:
0.0.0.0
::
0:0:0:0:0:0:0:0
import socket
# create an INET, STREAMing socket
serversocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
# bind the socket to a public host, and a well-known port
serversocket.bind(("0.0.0.0", 80))
# become a server socket
serversocket.listen(5)