After installing new router with ubuntu 18.04 on it i'm got a problem with working ospf via gre tunnel to my older routers. All configured simular, but from new router i got ospf state Init/DROther. Older routers (without netplan) dont see any neighbor. Tunnels work fine with static routing.
I found solution and fix problem manually. I found that netplan make tunnel with 'ttl inherit' (on other routers ttl 255).
tunnel1: gre/ip remote 1.1.1.1 local 2.2.2.2 ttl inherit
After ip tunnel change tunnel1 ttl 255
command execution ospf starts to work.
How can I add to netplan ttl and pointopoint parameters to tunnel intarface? How to set commands like below to netplan file?
ifconfig tunnel1 pointopoint 10.2.2.1
ip tunnel change tunnel1 ttl 255