IPv6 link-local address causes "Invalid argument" / "Bind Error" #89
Description
ISSUE TYPE
- Bug Report
OS / ENVIRONMENT
- Operating system: Ubuntu 20.04
- Python version: 3.8.2
- Command with highest logging output level is attached.
Here is the terminal output (address is masked for privacy).
$ pwncat -V
pwncat: Version 0.1.0 (https://github.com/cytopia/pwncat) by cytopia
$ pwncat -vvvv fe80::xxxx:xxxx:xxxx:xxxx%eth0 7777
2020-08-16 13:52:30,945 DEBUG [MainThread] 3391:__init__(): STDOUT isatty: True
2020-08-16 13:52:30,945 DEBUG [MainThread] 3392:__init__(): STDIN isatty: True
2020-08-16 13:52:30,945 DEBUG [MainThread] 3393:__init__(): STDIN posix: False (posix)
2020-08-16 13:52:30,945 DEBUG [MainThread] 1465:create_socket(): Creating (family 10/IPv6, TCP) socket
2020-08-16 13:52:30,945 DEBUG [MainThread] 1485:create_socket(): Disabling IPv4 support on IPv6 socket
2020-08-16 13:52:30,945 DEBUG [MainThread] 1465:create_socket(): Creating (family 2/IPv4, TCP) socket
2020-08-16 13:52:30,946 DEBUG [MainThread] 1429:gethostbyname(): Resolved IPv6 host: fe80::xxxx:xxxx:xxxx:xxxx
2020-08-16 13:52:30,946 DEBUG [MainThread] 1435:gethostbyname(): Resolving IPv4 host: fe80::xxxx:xxxx:xxxx:xxxx%eth0 failed: [Errno -9] Address family for hostname not supported
2020-08-16 13:52:30,946 DEBUG [MainThread] 1641:connect(): Connecting to fe80::xxxx:xxxx:xxxx:xxxx:7777 (family 10/IPv6, TCP)
2020-08-16 13:52:30,946 ERROR [MainThread] 2122:run_client(): Connecting to fe80::xxxx:xxxx:xxxx:xxxx:7777 (family 10/IPv6, TCP) failed: [Errno 22] Invalid argument
2020-08-16 13:52:30,946 INFO [MainThread] 2976:__client_reconnect_to_server(): Reconnect count is used up. Shutting down.
$ pwncat -vvvv -l fe80::xxxx:xxxx:xxxx:xxxx%eth0 7777
2020-08-16 13:52:35,838 DEBUG [MainThread] 3391:__init__(): STDOUT isatty: True
2020-08-16 13:52:35,838 DEBUG [MainThread] 3392:__init__(): STDIN isatty: True
2020-08-16 13:52:35,838 DEBUG [MainThread] 3393:__init__(): STDIN posix: False (posix)
2020-08-16 13:52:35,838 DEBUG [MainThread] 1465:create_socket(): Creating (family 10/IPv6, TCP) socket
2020-08-16 13:52:35,838 DEBUG [MainThread] 1485:create_socket(): Disabling IPv4 support on IPv6 socket
2020-08-16 13:52:35,838 DEBUG [MainThread] 1465:create_socket(): Creating (family 2/IPv4, TCP) socket
2020-08-16 13:52:35,839 DEBUG [MainThread] 1429:gethostbyname(): Resolved IPv6 host: fe80::xxxx:xxxx:xxxx:xxxx
2020-08-16 13:52:35,839 DEBUG [MainThread] 1435:gethostbyname(): Resolving IPv4 host: fe80::xxxx:xxxx:xxxx:xxxx%eth0 failed: [Errno -9] Address family for hostname not supported
2020-08-16 13:52:35,839 DEBUG [MainThread] 2187:run_server(): Removing (family 2/IPv4) due to: Resolving IPv4 host: fe80::xxxx:xxxx:xxxx:xxxx%eth0 failed: [Errno -9] Address family for hostname not supported
2020-08-16 13:52:35,839 DEBUG [MainThread] 1517:bind(): Binding (family 10/IPv6, TCP) socket to fe80::xxxx:xxxx:xxxx:xxxx:7777
2020-08-16 13:52:35,839 DEBUG [MainThread] 2207:run_server(): Removing (family 10/IPv6) due to: Binding (family 10/IPv6, TCP) socket to fe80::xxxx:xxxx:xxxx:xxxx:7777 failed: [Errno 22] Invalid argument
2020-08-16 13:52:35,839 ERROR [MainThread] 2216:run_server(): Bind Error: Could not bind any socket
2020-08-16 13:52:35,839 INFO [MainThread] 3034:__server_rebind(): Rebind count is used up. Shutting down.STEPS TO REPRODUCE
Same as above log.
EXPECTED BEHAVIOUR
Works same as IPv6 global unicast address.
ACTUAL BEHAVIOUR
Invalid argument / Bind Error