const golang.org/x/sys/unix.IPV6_PMTUDISC_PROBE

one use

	golang.org/x/sys/unix (current package)
		zerrors_linux.go#L1617: 	IPV6_PMTUDISC_PROBE                         = 0x3

The pages are generated with Golds v0.7.6. (GOOS=linux GOARCH=amd64)