Hey guys,
I having an issue with current rolling 1.3 release. Iw ould like to use L2TPv3 interfaces for ip tunnels betwenn different routers. I can create those L2TPv3 interfaces. But then still stock in A/D because source code enforce admin state down.
I can only activate interface with an sudo ip link set {ifname} up. But when i commit any change of that interface or reboot router the interface is set to admin state down?
Following configuration creates an L2TPv3 interface which is enforced to shutdown.
```
l2tpv3 l2tpeth10 {
address 192.168.37.1/27
encapsulation ip
local-ip 192.0.2.1
peer-session-id 100
peer-tunnel-id 200
remote-ip 203.0.113.24
session-id 100
tunnel-id 200
}
```
Because code enforce admin state down.
python/vyos/ifconfig/l2tpv3.py:
```
# interface is always A/D down. It needs to be enabled explicitly
self.set_admin_state('down')
```
Which makes no sense because you cannot enable interface permanently. We should do that a better way around and use disa ble command to shutdown interface permanently.
I have created an pull request for this change.