VPN RW IP can be empty.

diff --git a/html/cgi-bin/vpnmain.cgi b/html/cgi-bin/vpnmain.cgi
index 28fcdaceae3377cfd6c2492782b9f0cd747eceb4..888372e01daacc2e053b274726e2c8d5ca3c8af8 100644 (file)
--- a/html/cgi-bin/vpnmain.cgi
+++ b/html/cgi-bin/vpnmain.cgi
@@ -475,7 +475,7 @@ if ($cgiparams{'ACTION'} eq $Lang::tr{'save'} && $cgiparams{'TYPE'} eq '' && $cg
        goto SAVE_ERROR;
     }
 
-    if ( !&General::validipandmask($cgiparams{'RW_NET'}) ) {
+    if ( $cgiparams{'RW_NET'} ne '' and !&General::validipandmask($cgiparams{'RW_NET'}) ) {
        $errormessage = $Lang::tr{'urlfilter invalid ip or mask error'};
        goto SAVE_ERROR;
     }