diff --git a/mxstartup2mxconfig b/mxstartup2mxconfig
index a5014a3..021f915 100755
--- a/mxstartup2mxconfig
+++ b/mxstartup2mxconfig
@@ -104,12 +104,14 @@ sub eth_to_net_if_not_exists {
     my $net;
     my $num;
 
-    return $dev if -d "/sys/class/net/${dev}";
+    $dev !~ /^eth/ and return $dev;
+
+    -d "/sys/class/net/${dev}" and return $dev;
 
     ($num) = $dev =~ /^eth(\d+)$/;
     $net = sprintf "net%02d", $num;
 
-    return $net if -d "/sys/class/net/${net}";
+    -d "/sys/class/net/${net}" and return $net;
 
     return $dev;
 }
@@ -181,6 +183,8 @@ sub parse_ips {
   return $H;
 }
 
+
+
 ##############################################################################
 
 sub save_config_mxservice {