feat: Stop the PMTUD search at the interface MTU #4274

Job	Run time
check (ubuntu-latest, 1.76.0, debug)	3m 22s
check (ubuntu-latest, stable, debug)	5m 23s
check (ubuntu-latest, nightly, debug)	17m 0s
check (macos-latest, 1.76.0, debug)	3m 4s
check (macos-latest, stable, debug)	4m 20s
check (macos-latest, nightly, debug)	6h 0m 16s
check (windows-latest, 1.76.0, debug)	5m 45s
check (windows-latest, stable, debug)	9m 51s
check (windows-latest, nightly, debug)	6m 24s
check (ubuntu-latest, stable, release)	7m 10s
bench	0s
	7h 2m 35s

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