const syscall.IP_MULTICAST_IF

2 uses

	syscall (current package)
		zerrors_linux_amd64.go#L468: 	IP_MULTICAST_IF                  = 0x20

	net
		sockoptip_linux.go#L18: 	err := fd.pfd.SetsockoptIPMreqn(syscall.IPPROTO_IP, syscall.IP_MULTICAST_IF, mreq)