(ubuntuserver-10.04) # netstat -anp|grep cups
tcp        0      0 192.168.1.30:631        0.0.0.0:*               LISTEN      2336/cupsd   
tcp        0      0 127.0.0.1:631           0.0.0.0:*               LISTEN      2336/cupsd   
tcp6       0      0 ::1:631                 :::*                    LISTEN      2336/cupsd   
unix  2      [ ACC ]     STREAM     LISTENING     9925     2336/cupsd          /var/run/cups/cups.sock



(ubuntu-14.04) # netstat -anp|grep cups
tcp 0 0 192.168.1.99:631 0.0.0.0:* LISTEN 2018/cupsd 
tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 2018/cupsd 
unix 2 [ ACC ] STREAM LISTENING 12059 2018/cupsd /var/run/cups/cups.sock



(ubuntuserver-14.04) # netstat-anp|grep cups
tcp 0 0 0.0.0.0:631 0.0.0.0:* LISTEN 2299/cupsd      
tcp6 0 0 :::631 :::* LISTEN 2299/cupsd  
unix  2 [ ACC ] STREAM LISTENING 19230 2299/cupsd /var/run/cups/cups.sock