corrige detecção de endereços

internal/updater/updater.go

@@ -4,6 +4,7 @@ package updater
 import (
 	"fmt"
 	"log"
+	"net"
 
 	"git.aehoo.net/alphard/he-dydns/internal/config"
 	"git.aehoo.net/alphard/he-dydns/internal/hedns"
@@ -34,21 +35,24 @@ func Run(cfg *config.Config) error {
 
 	var failures int
 	for _, entry := range cfg.Entries {
-		if addrs.IPv4 != nil {
-			if err := hedns.Update(entry.Hostname, entry.Token, addrs.IPv4); err != nil {
-				log.Printf("error: %v", err)
-				failures++
-			} else {
-				log.Printf("updated %s -> %s", entry.Hostname, addrs.IPv4)
-			}
+		var ip net.IP
+		switch entry.RecordType {
+		case config.RecordTypeAAAA:
+			ip = addrs.IPv6
+		default:
+			ip = addrs.IPv4
 		}
-		if addrs.IPv6 != nil {
-			if err := hedns.Update(entry.Hostname, entry.Token, addrs.IPv6); err != nil {
-				log.Printf("error: %v", err)
-				failures++
-			} else {
-				log.Printf("updated %s -> %s", entry.Hostname, addrs.IPv6)
-			}
+
+		if ip == nil {
+			log.Printf("no %s address available for %s; skipping", entry.RecordType, entry.Hostname)
+			continue
+		}
+
+		if err := hedns.Update(entry.Hostname, entry.Token, ip); err != nil {
+			log.Printf("error: %v", err)
+			failures++
+		} else {
+			log.Printf("updated %s (%s) -> %s", entry.Hostname, entry.RecordType, ip)
 		}
 	}