On 23.04.2015 05:37 AM, Anatoly Smaznov wrote: > Here's the output: > > [aaa@mmm ~]$ ss -l -x -u > State Recv-Q Send-Q Local Address:Port Peer Address:Port > [aaa@mmm ~]$ ss -xu > Recv-Q Send-Q Local Address:Port Peer Address:Port > [aaa@mmm ~]$ ss -v > ss utility, iproute2-ss150210 I can reproduce this with iproute2 4.0.0. Adding the -u flag is leading to no output. I still maintain this is a bug in iproute2, unless the new behavior is intentional. Adding -u always makes the returned list be empty. Mihai