const golang.org/x/sys/unix.IPV6_2292RTHDR

one use

	golang.org/x/sys/unix (current package)
		zerrors_darwin_arm64.go#L764: 	IPV6_2292RTHDR                    = 0x18

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