tcp_test fails with connection reset

[==========] Running 11 test(s).
[ RUN      ] tcp_noop
[       OK ] tcp_noop
[ RUN      ] tcp_noresponse
[       OK ] tcp_noresponse
[ RUN      ] tcp_timeout_recovery
[       OK ] tcp_timeout_recovery
[ RUN      ] tcp_recv_one
[       OK ] tcp_recv_one
[ RUN      ] tcp_recv_two
[       OK ] tcp_recv_two
[ RUN      ] tcp_recv_send
[       OK ] tcp_recv_send
[ RUN      ] tcp_recv_send_sendback
listen_send_cb(0x7f40a20b3300, connection reset, 0x7f40a20b3300)
0x36 != 0

This is the same issue as #3594 (closed), perhaps we should just ignore this particular error code?