title: Meaning of fields in /proc/net/udp
body: <p>I would like to understand what each of the fields in /proc/net/udp and /proc/net/snmp mean:</p>
  
  <pre><code># cat /proc/net/udp
   sl  local_address rem_address   st tx_queue rx_queue tr tm-&gt;when retrnsmt   uid  timeout inode ref pointer drops
    4: 00000000:006F 00000000:0000 07 00000000:00000000 00:00000000 00000000     0        0 10777 2 ffff88023bbd3a80 0
  110: 00000000:4959 00000000:0000 07 00000000:00000000 00:00000000 00000000     0        0 10975 2 ffff88023bbd30c0 0
  122: 00000000:0265 00000000:0000 07 00000000:00000000 00:00000000 00000000     0        0 10781 2 ffff88023bbd3400 0
  
  # cat /proc/net/snmp
  Udp: InDatagrams NoPorts InErrors OutDatagrams RcvbufErrors SndbufErrors
  Udp: 768010194 3069028933 1052487950 17032 68916498 0
  </code></pre>