Hi! With the last iproute2 release, ss command output does not differentiate between any-address IPv4 sockets from the IPv6 ones. I don't know if this is an expected behaviour, but the old output looks more useful. Below I pasted the difference between the old behaviour and the new one. I am happy to send a patch if you want. Thanks
iproute2-4.12 ------------- $ ss --version ss utility, iproute2-ss170705 $ ss -ntl State Recv-Q Send-Q Local Address:Port Peer Address:Port LISTEN 0 100 *:587 *:* LISTEN 0 100 *:110 *:* LISTEN 0 100 *:143 *:* LISTEN 0 128 *:80 *:* LISTEN 0 128 *:2225 *:* LISTEN 0 10 127.0.0.1:5010 *:* LISTEN 0 128 *:20 *:* LISTEN 0 128 127.0.0.1:20150 *:* LISTEN 0 128 *:61719 *:* LISTEN 0 100 *:25 *:* LISTEN 0 3 *:1723 *:* LISTEN 0 128 *:17500 *:* LISTEN 0 128 127.0.0.1:17600 *:* LISTEN 0 128 *:8000 *:* LISTEN 0 100 *:993 *:* LISTEN 0 128 127.0.0.1:17603 *:* LISTEN 0 100 *:995 *:* LISTEN 0 100 :::587 :::* LISTEN 0 100 :::110 :::* LISTEN 0 100 :::143 :::* LISTEN 0 128 :::22000 :::* LISTEN 0 128 :::80 :::* LISTEN 0 128 :::2225 :::* LISTEN 0 128 :::20 :::* LISTEN 0 128 ::1:20150 :::* LISTEN 0 100 :::25 :::* LISTEN 0 128 :::17500 :::* LISTEN 0 128 :::8384 :::* LISTEN 0 100 :::993 :::* LISTEN 0 100 :::995 :::* iproute2-4.13 ------------- $ ss --version ss utility, iproute2-ss170905 $ ss -ntl State Recv-Q Send-Q Local Address:Port Peer Address:Port LISTEN 0 100 *:587 *:* LISTEN 0 100 *:110 *:* LISTEN 0 100 *:143 *:* LISTEN 0 128 *:80 *:* LISTEN 0 128 *:2225 *:* LISTEN 0 10 127.0.0.1:5010 *:* LISTEN 0 128 *:20 *:* LISTEN 0 128 127.0.0.1:20150 *:* LISTEN 0 128 *:61719 *:* LISTEN 0 100 *:25 *:* LISTEN 0 3 *:1723 *:* LISTEN 0 128 *:17500 *:* LISTEN 0 128 127.0.0.1:17600 *:* LISTEN 0 128 *:8000 *:* LISTEN 0 100 *:993 *:* LISTEN 0 128 127.0.0.1:17603 *:* LISTEN 0 100 *:995 *:* LISTEN 0 100 *:587 *:* LISTEN 0 100 *:110 *:* LISTEN 0 100 *:143 *:* LISTEN 0 128 *:22000 *:* LISTEN 0 128 *:80 *:* LISTEN 0 128 *:2225 *:* LISTEN 0 128 *:20 *:* LISTEN 0 128 [::1]:20150 *:* LISTEN 0 100 *:25 *:* LISTEN 0 128 *:17500 *:* LISTEN 0 128 *:8384 *:* LISTEN 0 100 *:993 *:* LISTEN 0 100 *:995 *:*