Is there a way to change the TTL on an APN Passthrough setup on a SXT R? I have it connected to a vlan on the bridge of the SXT. Trying to have it make the change on the SXT and not on the router its connected to.
Reply from support:
There is no way to change the TTL on the SXT when it is in passthrough mode as it completely passes the firewall, the mangle needs to be done on the host device.
I made a feature request.
I’m thinking the tech needed will be something like Integrated Routing and Bridging (IRB) and Bridge Group Virtual Interfaces (BVI). A way to take layer 2 traffic on any interface, bridge it to a layer 3 virtual interface, that then modifies the packet(s), and sends it out transparently to another layer 2 endpoint interface.
I was thinking tech like MPLS could be used to alter the TTL, by being put between the two interfaces. Knowledge of MPLS setup and limitations is limited for me at the moment.
A Mikrotik router with that tech will open up a bunch of other possibilities.