--- /dev/null
+--- cryptsetup-0.1/src/setup.c 2004-03-07 22:56:34.000000000 +0100
++++ cryptsetup-new/src/setup.c 2006-01-03 01:54:01.000000000 +0100
+@@ -236,7 +236,8 @@
+ return -EEXIST;
+ }
+ if (r != -ENODEV)
+- return r;
++ // return r;
++ puts("ignoring results of device mapper support check");
+ }
+
+ if (options->key_size < 0 || options->key_size > 1024) {