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

one use

	vendor/golang.org/x/net/route (current package)
		zsys_darwin.go#L70: 	sysRTA_BRD     = 0x80

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