diff --git a/src/PVE/QemuServer/Cloudinit.pm b/src/PVE/QemuServer/Cloudinit.pm
index d8eb1ca..7fa5041 100644
--- a/src/PVE/QemuServer/Cloudinit.pm
+++ b/src/PVE/QemuServer/Cloudinit.pm
@@ -201,14 +201,15 @@ sub configdrive2_network {
     my $content = "auto lo\n";
     $content .= "iface lo inet loopback\n\n";
 
+    my $dns_options = '';
     my ($searchdomains, $nameservers) = get_dns_conf($conf);
     if ($nameservers && @$nameservers) {
         $nameservers = join(' ', @$nameservers);
-        $content .= "        dns_nameservers $nameservers\n";
+        $dns_options .= "        dns-nameservers $nameservers\n";
     }
     if ($searchdomains && @$searchdomains) {
         $searchdomains = join(' ', @$searchdomains);
-        $content .= "        dns_search $searchdomains\n";
+        $dns_options .= "        dns-search $searchdomains\n";
     }
 
     my @ifaces = grep { /^net(\d+)$/ } keys %$conf;
@@ -228,6 +229,7 @@ sub configdrive2_network {
                 $content .= "        address $addr\n";
                 $content .= "        netmask $mask\n";
                 $content .= "        gateway $net->{gw}\n" if $net->{gw};
+                $content .= $dns_options;
             }
         }
         if ($net->{ip6}) {
@@ -239,6 +241,7 @@ sub configdrive2_network {
                 $content .= "        address $addr\n";
                 $content .= "        netmask $mask\n";
                 $content .= "        gateway $net->{gw6}\n" if $net->{gw6};
+                $content .= $dns_options;
             }
         }
     }