On Mon, Jul 19, 2021 at 03:30:22PM -0700, Vincent Li wrote:

When run test_tc_tunnel.sh, it complains following error

ipip
encap 192.168.1.1 to 192.168.1.2, type ipip, mac none len 100
test basic connectivity
nc: cannot use -p and -l

nc man page has:

     -l  Listen for an incoming connection rather than initiating
         a connection to a remote host.Cannot be used together with
         any of the options -psxz. Additionally, any timeouts specified
         with the -w option are ignored.

Correct nc in server_listen().

I have two distros and both work with -p in listen.
However, they also work the same without -p, so it makes sense to remove it.

Acked-by: Martin KaFai Lau <redacted>