--- Net-IP-1.25/IP.pm.orig	2006-05-23 01:46:40.000000000 +0900

+++ Net-IP-1.25/IP.pm	2006-07-04 01:54:55.000000000 +0900

@@ -410,7 +410,7 @@

     my $int = ip_bintoint($self->binip());

-    if (!$int) {

+    if (ref($int) ne "Math::BigInt") {

         $self->{error} = $ERROR;

         $self->{errno} = $ERRNO;

         return;