chore(all): replace net.IP with netip.Addr

internal/provider/nordvpn/updater/ip.go

@@ -2,15 +2,16 @@ package updater
 
 import (
 	"fmt"
-	"net"
+	"net/netip"
 )
 
-func parseIPv4(s string) (ipv4 net.IP, err error) {
-	ip := net.ParseIP(s)
-	if ip == nil {
-		return nil, fmt.Errorf("%w: %q", ErrParseIP, s)
-	} else if ip.To4() == nil {
-		return nil, fmt.Errorf("%w: %s", ErrNotIPv4, ip)
+func parseIPv4(s string) (ipv4 netip.Addr, err error) {
+	ipv4, err = netip.ParseAddr(s)
+	if err != nil {
+		return ipv4, err
 	}
-	return ip, nil
+	if !ipv4.Is4() {
+		return ipv4, fmt.Errorf("%w: %s", ErrNotIPv4, ipv4)
+	}
+	return ipv4, nil
 }

internal/provider/nordvpn/updater/servers.go

@@ -4,7 +4,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"net"
+	"net/netip"
 	"sort"
 
 	"github.com/qdm12/gluetun/internal/constants/vpn"
@@ -13,7 +13,6 @@ import (
 )
 
 var (
-	ErrParseIP = errors.New("cannot parse IP address")
 	ErrNotIPv4 = errors.New("IP address is not IPv4")
 )
 
@@ -47,7 +46,7 @@ func (u *Updater) FetchServers(ctx context.Context, minServers int) (
 			Region:   jsonServer.Country,
 			Hostname: jsonServer.Domain,
 			Number:   number,
-			IPs:      []net.IP{ip},
+			IPs:      []netip.Addr{ip},
 			TCP:      jsonServer.Features.TCP,
 			UDP:      jsonServer.Features.UDP,
 		}