Hi Felipe, thank you for your consideration of this. It took me a bit to create
a diagram:
10.10.0.0/22 10.10.4.0/22
^ ^
v v
+---------------+ +---------------+
| Initiator | | Responder |
|---------------| |---------------|
|10.9.255.253/30|<- - - -VTI - - - ->|10.9.255.254/30|
+---------------+ +---------------+
^ ^
v v
ini.tia.tor.ip <---- Internet ----> res.pon.der.ip
From the bottom, the internet connection between the initiator and responder, a
PtP VTI between the the two nodes and in turn, the two /22 networks that I want
to connect through the VTI as native routing between networks (hence the VTI
interfaces on each node). The initiator public IP is dynamic.
The reason for not doing straight tunneling between the two /22 networks is
OSPF discovery of interfaces, typical routing daemons can only see interfaces
to add discovery over (ie “vti*”). As the network grows, the routing daemons
will self-discover for optimal backbone routing.
Apologies that I didn’t get deeper into that previously! Does it help?
