reverse ssh leaves port opened on the server

[vallettea]

if the modem hangs up unexpectedly after having issued the command:

ssh -N -R 2222:localhost:22 ants

then he cannot issue the command again because on the server the port is already in use:

$netstat -na
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address           Foreign Address         State
tcp        0      0 127.0.0.1:2222          0.0.0.0:*               LISTEN