SNMPD show logs systemstats_linux: unexpected header length
To reproduce:
```
set service snmp community public client '127.0.0.1'
```
Check logs
```
May 01 15:03:58 f3 systemd[1]: Stopping snmpd.service - Simple Network Management Protocol (SNMP) Daemon....
May 01 15:03:58 f3 systemd[1]: snmpd.service: Deactivated successfully.
May 01 15:03:58 f3 systemd[1]: Stopped snmpd.service - Simple Network Management Protocol (SNMP) Daemon..
May 01 15:03:58 f3 systemd[1]: Starting snmpd.service - Simple Network Management Protocol (SNMP) Daemon....
May 01 15:03:58 f3 snmpd[88537]: systemstats_linux: unexpected header length in /proc/net/snmp. 237 != 224
May 01 15:03:58 f3 snmpd[88537]: systemstats_linux: unexpected header length in /proc/net/snmp. 237 != 224
May 01 15:03:58 f3 snmpd[88537]: systemstats_linux: unexpected header length in /proc/net/snmp. 237 != 224
May 01 15:03:58 f3 systemd[1]: Started snmpd.service - Simple Network Management Protocol (SNMP) Daemon..
```
Possible fix in https://github.com/net-snmp/net-snmp/pull/785