fix: set correct IP address type for machine, kubernetes-sigs#947

Signed-off-by: Siarhei Rasiukevich <[email protected]>

Author: CharlieR-o-o-t

pkg/services/vimmachine.go

@@ -289,8 +289,13 @@ func (v *VimMachineService) reconcileNetwork(ctx context.Context, vimMachineCtx
 	addresses := vm.Status.Addresses
 	machineAddresses := make([]clusterv1.MachineAddress, 0, len(addresses))
 	for _, addr := range addresses {
+		var addrType = clusterv1.MachineInternalIP
+		if !infrautilv1.IsInternalIP(addr) {
+			addrType = clusterv1.MachineExternalIP
+		}
+
 		machineAddresses = append(machineAddresses, clusterv1.MachineAddress{
-			Type:    clusterv1.MachineExternalIP,
+			Type:    addrType,
 			Address: addr,
 		})
 	}

pkg/util/machines.go

@@ -258,3 +258,41 @@ func MachinesAsString(machines []*clusterv1.Machine) string {
 	}
 	return message
 }
+
+// IsInternalIP checks if the IP is private/internal
+func IsInternalIP(ip string) bool {
+	netIP := net.ParseIP(ip)
+	if netIP == nil {
+		return false
+	}
+
+	privateBlocks := []*net.IPNet{
+		{IP: net.IPv4(10, 0, 0, 0), Mask: net.CIDRMask(8, 32)},     // 10.0.0.0/8
+		{IP: net.IPv4(172, 16, 0, 0), Mask: net.CIDRMask(12, 32)},  // 172.16.0.0/12
+		{IP: net.IPv4(192, 168, 0, 0), Mask: net.CIDRMask(16, 32)}, // 192.168.0.0/16
+		{IP: net.IPv4(127, 0, 0, 1), Mask: net.CIDRMask(8, 32)},    // 127.0.0.0/8 (loopback)
+		{IP: net.IPv4(169, 254, 0, 0), Mask: net.CIDRMask(16, 32)}, // 169.254.0.0/16 (link-local)
+	}
+
+	// Check IPv4 private ranges
+	for _, block := range privateBlocks {
+		if block.Contains(netIP) {
+			return true
+		}
+	}
+
+	// Check IPv6 private ranges
+	privateIPv6Blocks := []*net.IPNet{
+		{IP: net.ParseIP("::1"), Mask: net.CIDRMask(128, 128)},   // Loopback
+		{IP: net.ParseIP("fc00::"), Mask: net.CIDRMask(7, 128)},  // Unique Local Addresses (ULA)
+		{IP: net.ParseIP("fe80::"), Mask: net.CIDRMask(10, 128)}, // Link-local
+	}
+
+	for _, block := range privateIPv6Blocks {
+		if block.Contains(netIP) {
+			return true
+		}
+	}
+
+	return false
+}