const net.sysTCP_KEEPINTVL

2 uses

	net (current package)
		tcpsockopt_darwin.go#L14: const sysTCP_KEEPINTVL = 0x101
		tcpsockopt_darwin.go#L19: 	if err := fd.pfd.SetsockoptInt(syscall.IPPROTO_TCP, sysTCP_KEEPINTVL, secs); err != nil {