const syscall.IPV6_V6ONLY

3 uses

	syscall (current package)
		zerrors_linux_amd64.go#L447: 	IPV6_V6ONLY                      = 0x1a

	net
		ipsock_posix.go#L57: 		syscall.SetsockoptInt(s, syscall.IPPROTO_IPV6, syscall.IPV6_V6ONLY, probes[i].value)
		sockopt_linux.go#L17: 		syscall.SetsockoptInt(s, syscall.IPPROTO_IPV6, syscall.IPV6_V6ONLY, boolint(ipv6only))