const golang.org/x/sys/unix.IPV6_RTHDR_LOOSE

one use

	golang.org/x/sys/unix (current package)
		zerrors_darwin_arm64.go#L801: 	IPV6_RTHDR_LOOSE                  = 0x0

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