fix lint errors

Author: Rahul Sharma

internal/controller/linodemachine_controller_helpers.go

@@ -57,6 +57,7 @@ import (
 const (
 	maxBootstrapDataBytesCloudInit = 16384
 	vlanIPFormat                   = "%s/11"
+	ipv6Range                      = "/64" // Default IPv6 range for VPC interfaces
 )
 
 var (
@@ -497,7 +498,7 @@ func getVPCInterfaceConfig(ctx context.Context, machineScope *scope.MachineScope
 		IPv6: &linodego.InstanceConfigInterfaceCreateOptionsIPv6{
 			Ranges: []linodego.InstanceConfigInterfaceCreateOptionsIPv6Range{
 				{
-					Range: ptr.To("/64"),
+					Range: ptr.To(ipv6Range),
 				},
 			},
 		},
@@ -556,6 +557,13 @@ func getVPCInterfaceConfigFromDirectID(ctx context.Context, machineScope *scope.
 		IPv4: &linodego.VPCIPv4{
 			NAT1To1: ptr.To("any"),
 		},
+		IPv6: &linodego.InstanceConfigInterfaceCreateOptionsIPv6{
+			Ranges: []linodego.InstanceConfigInterfaceCreateOptionsIPv6Range{
+				{
+					Range: ptr.To(ipv6Range),
+				},
+			},
+		},
 	}, nil
 }
 

internal/webhook/v1alpha2/linodevpc_webhook.go

@@ -182,14 +182,14 @@ func (r *linodeVPCValidator) validateLinodeVPCSubnets(spec infrav1alpha2.LinodeV
 		labels  = []string{}
 	)
 
-	for i, subnet := range spec.Subnets {
+	for idx, subnet := range spec.Subnets {
 		var (
 			label         = subnet.Label
-			labelPath     = field.NewPath("spec").Child("Subnets").Index(i).Child("Label")
+			labelPath     = field.NewPath("spec").Child("Subnets").Index(idx).Child("Label")
 			ip            = subnet.IPv4
-			ipPath        = field.NewPath("spec").Child("Subnets").Index(i).Child("IPv4")
+			ipPath        = field.NewPath("spec").Child("Subnets").Index(idx).Child("IPv4")
 			ipv6Range     = subnet.IPv6Range
-			ipv6RangePath = field.NewPath("spec").Child("Subnets").Index(i).Child("IPv6Range")
+			ipv6RangePath = field.NewPath("spec").Child("Subnets").Index(idx).Child("IPv6Range")
 		)
 
 		// Validate Subnet Label
@@ -304,7 +304,7 @@ func validateSubnetIPv4CIDR(cidr string, path *field.Path) (*netipx.IPSet, *fiel
 
 func validateIPv6Range(ipv6Range string, path *field.Path) *field.Error {
 	var errs = []error{
-		errors.New("IPv6 range must start with /. Example: /64"),
+		errors.New("IPv6 range must start with /. Example: /52"),
 		errors.New("IPv6 range doesn't contain a valid number after /"),
 		errors.New("IPv6 range must be between /0 and /128"),
 	}