References: golang.org/x/sys/unix.RTN

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

one use

	golang.org/x/sys/unix (current package)
		ztypes_linux.go#L614: 	RTN_UNSPEC         = 0x0

The pages are generated with Golds v0.4.9. (GOOS=linux GOARCH=amd64)