const vendor/golang.org/x/net/route.sysCTL_UNSPEC

one use

	vendor/golang.org/x/net/route (current package)
		zsys_darwin.go#L28: 	sysCTL_UNSPEC  = 0x0

The pages are generated with Golds v0.2.8-preview. (GOOS=darwin GOARCH=arm64)