Update plp-mtu-discovery to the GIT HEAD of 2026-03-16. Signed-off-by: Chester A. Unal <chester.a.unal@arinc9.com>
Perform Path MTU Discovery without relying on ICMP errors, which are often not delivered. Signed-off-by: Chester A. Unal <chester.a.unal@arinc9.com>