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Set default TTL 64 for tunnels
Closed, ResolvedPublicFEATURE REQUEST

Description

Set default TTL 64 for tunnels

1.2-x has default ttl 255

[email protected]# set interfaces tunnel tun0 parameters ip ttl 
Possible completions:
   <0-255>      Time to live (default 255)

1.4 has default ttl inherit

[email protected]# set interfaces tunnel tun0 parameters ip ttl 
Possible completions:
   0            Inherit - copy value from original IP header
   1-255        Time to Live

Inherit works not properly. So bgp and ospf protocols can't communicate with inheriting.
Also after an update from 1.2 to 1.3/1.4 the cause a bgp session not established.

https://forum.vyos.io/t/ospf-via-gre-tunnel/
https://forum.vyos.io/t/bgp-sessions-with-non-mikrotik-devices-not-coming-up/
https://forum.vyos.io/t/problem-with-ospf-over-gre-tunnel-with-1-3-and-1-4/
https://forum.vyos.io/t/bgp-state-connect-error-via-gre-tunnel/
And others topics.

Details

Difficulty level
Unknown (require assessment)
Version
-
Why the issue appeared?
Will be filled on close
Is it a breaking change?
Behavior change
Issue type
Improvement (missing useful functionality)

Event Timeline

dmbaturin changed Is it a breaking change? from Unspecified (possibly destroys the router) to Behavior change.Jun 3 2021, 3:59 PM
c-po assigned this task to Viacheslav.
c-po added a project: VyOS 1.3 Equuleus.
c-po moved this task from Need Triage to Finished on the VyOS 1.4 Sagitta board.
c-po moved this task from Need Triage to Finished on the VyOS 1.3 Equuleus board.
SrividyaA set Issue type to Improvement (missing useful functionality).Aug 31 2021, 6:07 PM