Missing sshd process name from netstat results

[Adrian Matei]

We use an alias for getting information how many established connections
are for sshd process name. Recently we updated all our packages in Debian
7.9. Even we have lots of connections to sshd server, they are not reported
by process name in netstat. Process name appears as a figure, the first one
is 0 and increments by 1.

Please see the attachment. I am using netstat command then grepping by
process name then by port as root. Listen ports shows correctly PID/process
name, but for Established connections it shows PID/number. Process name is
missing for established connection.

Any advices?

Thank you.