port: builtin: UDP reply packet is dropped #86
Description
Terminal 1:
$ rootlesskit --net=slirp4netns --port-driver=builtin -p 0.0.0.0:1234:1234/udp -- sh -c "nc -u -l -p 1234 < /etc/issue"
Terminal 2:
$ echo foo | nc -u 127.0.0.1 1234
foo is printed on Terminal 1, but /etc/issue is not printed on Terminal 2 when --port-driver is set to builtin.
--port-driver=socat works as expected.
version: e6152ff