A found tunnel carries its MTU to the mesh #28

Merged

jschoubben merged 1 commits from feat/a-taken-tunnel-carries-its-mtu into main

2026-09-26 20:40:09 +00:00

Author	SHA1	Message	Date
jschoubben	8e2a1e762d	A found tunnel carries its MTU to the mesh The host parses MTU from the found [Interface] and reports it, so the mesh's interface can come up with the same MTU when it takes the tunnel over. A path tuned to 1380 regresses to the 1420 default otherwise — invisible to ping, fatal to TLS handshakes and transfers over that path (novox/hq: the mesh had no MTU concept). Zero when the config named none, and the mesh writes no MTU line then.	2026-09-26 22:39:54 +02:00

Author

SHA1

Message

Date

jschoubben

8e2a1e762d

A found tunnel carries its MTU to the mesh

The host parses MTU from the found [Interface] and reports it, so the
mesh's interface can come up with the same MTU when it takes the tunnel
over. A path tuned to 1380 regresses to the 1420 default otherwise —
invisible to ping, fatal to TLS handshakes and transfers over that path
(novox/hq: the mesh had no MTU concept). Zero when the config named
none, and the mesh writes no MTU line then.

2026-09-26 22:39:54 +02:00