VPP ethernet interface cannot ping anything if it used for PPPoE-server (vpp-cp options)
```
set interfaces ethernet eth1 address '10.0.0.1/30'
set interfaces ethernet eth1 vif 23
set interfaces ethernet eth1 vif-s 2222 vif-c 22
set interfaces ethernet eth2 vif 3333
set service pppoe-server authentication local-users username user-1 password 'user-1'
set service pppoe-server authentication local-users username user-23 password 'user-23'
set service pppoe-server authentication mode 'local'
set service pppoe-server client-ip-pool first range '100.64.0.1-100.64.0.100'
set service pppoe-server default-pool 'first'
set service pppoe-server gateway-address '100.64.0.1'
set service pppoe-server interface eth1 combined
set service pppoe-server interface eth1.23
set service pppoe-server interface eth2.3333
set vpp settings interface eth1 driver 'dpdk'
set vpp settings interface eth2 driver 'dpdk'
set vpp settings unix poll-sleep-usec '2222'
```
accel conf
```
[pppoe]
verbose=1
ac-name=vyos-ac
interface=eth1,vpp-cp=true
interface=eth1.23,vpp-cp=true
interface=eth2.3333,vpp-cp=true
ip-pool=first
I cannot ping 10.0.0.2 (remote site has 10.0.0.2/30 on eth1)
```
```
vyos@r14# run ping 10.0.0.2
PING 10.0.0.2 (10.0.0.2) 56(84) bytes of data.
From 10.0.0.1 icmp_seq=1 Destination Host Unreachable
From 10.0.0.1 icmp_seq=2 Destination Host Unreachable
^C
--- 10.0.0.2 ping statistics ---
2 packets transmitted, 0 received, +2 errors, 100% packet loss, time 1054ms
pipe 2
[edit]
vyos@r14#
```
delete vpp and it works again
```
vyos@r14# delete vpp
[edit]
vyos@r14# commit
[edit]
vyos@r14# run ping 10.0.0.2
PING 10.0.0.2 (10.0.0.2) 56(84) bytes of data.
64 bytes from 10.0.0.2: icmp_seq=1 ttl=64 time=0.182 ms
64 bytes from 10.0.0.2: icmp_seq=2 ttl=64 time=0.163 ms
^C
--- 10.0.0.2 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1046ms
rtt min/avg/max/mdev = 0.163/0.172/0.182/0.009 ms
[edit]
vyos@r14#
```