Starting sshuttle proxy (version 1.3.2).
c : Starting firewall manager with command: ['/usr/local/bin/sshuttle', '-v', '-v', '-v', '--method', 'auto', '--firewall']
fw: Starting firewall with Python version 3.11.2

......


c : DNS requests normally directed at these servers will be redirected to remote:
c :   (<AddressFamily.AF_INET: 2>, '192.168.1.1')
c : Trying to bind redirector on port 0
c : address in use
Traceback (most recent call last):
  File "/usr/local/bin/sshuttle", line 8, in <module>
    sys.exit(main())
             ^^^^^^
  File "/usr/local/lib/python3.11/dist-packages/sshuttle/cmdline.py", line 109, in main
    return_code = client.main(ipport_v6, ipport_v4,
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/dist-packages/sshuttle/client.py", line 1075, in main
    raise last_e
  File "/usr/local/lib/python3.11/dist-packages/sshuttle/client.py", line 1059, in main
    tcp_listener.bind(lv6, lv4)
  File "/usr/local/lib/python3.11/dist-packages/sshuttle/client.py", line 195, in bind
    self.v4.bind(address_v4)
OSError: [Errno 98] Address already in use

    def bind(self, address_v6, address_v4):
        assert not self.bind_called
        self.bind_called = True
        if address_v6 is not None:
            self.v6 = socket.socket(socket.AF_INET6, self.type, self.proto)
            self.v6.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_V6ONLY, 1) # <--- this
            try:
                self.v6.bind(address_v6)
            except OSError as e:
                if e.errno == errno.EADDRNOTAVAIL:
                    # On an IPv6 Linux machine, this situation occurs
                    # if you run the following prior to running
                    # sshuttle:
                    #
                    # echo 1 > /proc/sys/net/ipv6/conf/all/disable_ipv6
                    # echo 1 > /proc/sys/net/ipv6/conf/default/disable_ipv6
                    raise Fatal("Could not bind to an IPv6 socket with "
                                "address %s and port %s. "
                                "Potential workaround: Run sshuttle "
                                "with '--disable-ipv6'."
                                % (str(address_v6[0]), str(address_v6[1])))
                raise e
        else:
            self.v6 = None
        if address_v4 is not None:
            self.v4 = socket.socket(socket.AF_INET, self.type, self.proto)
            self.v4.bind(address_v4)
        else:
            self.v4 = None