Commit 8ef874bfc7296fa206eea2ad1e8a426f576bf6f6 has broken ss command
Since commit 8ef874bfc7296fa206eea2ad1e8a426f576bf6f6 ("sock_diag: Move the sock_ code to net/core/"), ss command from iproute package doesn't work if INET_DIAG is not enabled.
$ ss State Recv-Q Send-Q Local Address:Port Peer Address:Port TCPDIAG answers: Operation not supported