wip: migrate to mono-repo. SPN has already been moved to spn/

service/netenv/location_default.go

@@ -0,0 +1,9 @@
+//go:build !windows
+
+package netenv
+
+import "net"
+
+func newICMPListener(_ string) (net.PacketConn, error) { //nolint:unused,deadcode // TODO: clean with Windows code later.
+	return net.ListenPacket("ip4:icmp", "0.0.0.0")
+}