Tested using:
Site 1 (VyOS 1.2.2)
```
set interfaces vxlan vxlan100 address '10.10.10.2/24'
set interfaces vxlan vxlan100 remote '172.18.201.10'
set interfaces vxlan vxlan100 vni '100'
```
Site 2 (rewrite)
```
set interfaces vxlan vxlan100 address '10.10.10.1/24'
set interfaces vxlan vxlan100 description 'VyOS VXLAN'
set interfaces vxlan vxlan100 remote '172.18.202.10'
set interfaces vxlan vxlan100 vni '100'
```