I'm testing the accel-ppp-ng vpp implementation on rolling, the configuration I have works fine with vpp disabled.
If I enable vpp-cp and vlan-mon then a client on ether eth1 or eth1 with vlan 99 fail to connect.
```
interface eth1 {
vlan 2-4000
vlan-mon
vpp-cp
}
```
Just vpp-cp and a client on eth1 connects, eth1 vlan 99 doesn't connect
```
interface eth1 {
vpp-cp
}
```
Just vlan-mon / vlan and no vpp (with eth1 also removed from `vpp settings interface`) then I get a connection on eth1 vlan 99
```
interface eth1 {
vlan 2-4000
vlan-mon
}
```