xlab/kea: pin AP wired MTU to 1420 (interface-mtu) so CAPWAP joins over WG

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Skyworks / skyworks-Nix-infra

Browse code xlab/kea: pin AP wired MTU to 1420 (interface-mtu) so CAPWAP joins over WG The 3802 sends 1441-byte DF DTLS packets to the WLC and ignores PMTUD frag-needed (mtu 1420), so the join blackholes on the 1420 wg-to-wgnet tunnel and cycles every 30s. Add DHCP option-26 interface-mtu=1420 to the cisco-ap class so APs cap their wired MTU and never exceed the path MTU. Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]> main
1 parent ed6c416 commit cbcb31009aa443d5bfeb292385e3257dafdd3a2b Dixiao-L authored on 20 Jun

Browse code

The 3802 sends 1441-byte DF DTLS packets to the WLC and ignores PMTUD
frag-needed (mtu 1420), so the join blackholes on the 1420 wg-to-wgnet tunnel
and cycles every 30s. Add DHCP option-26 interface-mtu=1420 to the cisco-ap
class so APs cap their wired MTU and never exceed the path MTU.

Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>

main

1 parent ed6c416 commit cbcb31009aa443d5bfeb292385e3257dafdd3a2b

Dixiao-L authored on 20 Jun

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