proxy - snmp value

[nesq]

Hello,

I have zabbix-server and zabbix-proxy in version 3.4.7. I have a problem with asking the device behind proxy to snmp value. The device is zyxel zyxwall, which does not read the value in out of the network interface (it is always 0). Asking directly after snmp on a proxy host gets the value
snmpwalk -mall -v2c -cy9GitesPksSax 192.168.0.254 IF-MIB :: ifInOctets.8
IF-MIB :: ifInOctets.8 = Counter32: 4294967295
Other value of hostname, interface names are read correctly.

Does anyone have an idea where to look for a problem?

[volter]

Try to capture request and response on the wire and inspect it with Wireshark!