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Feature #6298

open

osmo-ggsn not providing MTU of the GTP tunnel to the MS

Added by pespin 5 months ago. Updated 3 months ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
-
Target version:
-
Start date:
12/08/2023
Due date:
% Done:

0%

Spec Reference:

Description

MTU is provided by PCO in IPv4 and through SLAAC in IPv6 (see https://github.com/open5gs/open5gs/issues/2754 for more info).
I think osmo-ggsn is not yet providing it to the MS, hence why one may not see it while looking at pcaps.
One can check at open5gs on how to submit it.

We probably also want to have it configurable in the vty and apply it on the created tunnel device too.
Probably something to be added through libosmocore ./include/osmocom/core/tun.h ./src/core/tun.c


Related issues

Related to OsmocomBB - Feature #6115: modem: MTU not set properly on tun ifaceFeedbackpespin07/26/2023

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