const vendor/golang.org/x/net/dns/dnsmessage.headerLen

2 uses

	vendor/golang.org/x/net/dns/dnsmessage (current package)
		message.go#L296: 	headerLen = 6 * uint16Len
		message.go#L1250: 	var hb [headerLen]byte

The pages are generated with Golds v0.7.6. (GOOS=linux GOARCH=amd64)