Config commit fails when using u32 integer area notation in OSPFv3.
ospfd allows area notation of type u32 integer **or** ipv4.
ospf6d allows area notation of **only** ipv4.
If I run
```
delete protocols ospfv3
set protocols ospfv3 area 0.0.0.0 interface eth0
commit
```
everything works as expected.
If I run
```
delete protocols ospfv3
set protocols ospfv3 area 0 interface eth0
commit
```
the commit fails with `% Unknown command: interface eth0 area 0`.
Need to remove u32 integer from the OSPFv3 area input template.
PR will follow.