Configure vlan no switch Netgear via SNMP

Question

Estou tentando configurar vlans em um netgear GS752TSX a partir da linha de comando do Linux com o netsnmp. Eu criei vlan 99 na interface web agora quer controlar as configurações pvid, saída e marcação. Eu os identifiquei como os MIBs que preciso mudar:

dot1qPvid.<port>
dot1qVlanStaticEgressPorts.99
dot1qVlanStaticUntaggedPorts.99

O Pvid funciona como eu esperava:

$ snmpset -r 1 -t 20 -v 2c -c private <switch> dot1qPvid.17 u 99
Q-BRIDGE-MIB::dot1qPvid.17 = Gauge32: 99
$ snmpget -r 1 -t 20 -v 2c -c private <switch> dot1qPvid.17
Q-BRIDGE-MIB::dot1qPvid.17 = Gauge32: 99

e as portas de saída também:

$ snmpset -r 1 -t 20 -v 2c -c private <switch> dot1qVlanStaticEgressPorts.99 x 'ff ff ff ff ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00'
Q-BRIDGE-MIB::dot1qVlanStaticEgressPorts.99 = Hex-STRING: FF FF FF FF FF FF 00 00 00 00 00 00 00 00 00 00 
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
00 00 00 00 00 00 00 00 00 00 00 
$ snmpget -r 1 -t 20 -v 2c -c private <switch> dot1qVlanStaticEgressPorts.99
Q-BRIDGE-MIB::dot1qVlanStaticEgressPorts.99 = Hex-STRING: FF FF FF FF FF FF 00 00 00 00 00 00 00 00 00 00 
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
00 00 00 00 00 00 00 00 00 00 00 

Mas desmarcar as portas não parece lembrar da minha configuração:

$ snmpset -r 1 -t 20 -v 2c -c private <switch> dot1qVlanStaticUntaggedPorts.99 x 'ff ff ff ff ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00'
Q-BRIDGE-MIB::dot1qVlanStaticUntaggedPorts.99 = Hex-STRING: FF FF FF FF FF FF 00 00 00 00 00 00 00 00 00 00 
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
00 00 00 00 00 00 00 00 00 00 00 
$ snmpget -r 1 -t 20 -v 2c -c private <switch> dot1qVlanStaticUntaggedPorts.99
Q-BRIDGE-MIB::dot1qVlanStaticUntaggedPorts.99 = Hex-STRING: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
00 00 00 00 00 00 00 00 00 00 00 

Eu tentei netsnmp 5.4.1 e 5.7.2.

Há algo que estou fazendo errado?