diff -urpN aircrack-2.41/linux/aircrack.c aircrack-2.41.patched/linux/aircrack.c
--- aircrack-2.41/linux/aircrack.c	2005-11-12 12:00:00.000000000 +0100
+++ aircrack-2.41.patched/linux/aircrack.c	2007-01-15 02:00:03.000000000 +0100
@@ -174,6 +174,8 @@ int cm_pipe[256][2];            /* child
 
 #define N_ATTACKS 17
 
+int rc1, rc2;
+
 enum KoreK_attacks
 {
     A_u15,                      /* semi-stable  15%             */
@@ -952,8 +954,8 @@ int crack_wep_thread( void *arg )
 
             i = q; do { i--; SWAP(Si[i],Si[jj[i]]); } while( i != 0 );
 
-            o1 = wep.ivbuf[xv + 3] ^ 0xAA; io1 = Si[o1]; S1 = S[1];
-            o2 = wep.ivbuf[xv + 4] ^ 0xAA; io2 = Si[o2]; S2 = S[2];
+            o1 = wep.ivbuf[xv + 3] ^ rc1; io1 = Si[o1]; S1 = S[1];
+            o2 = wep.ivbuf[xv + 4] ^ rc2; io2 = Si[o2]; S2 = S[2];
             Sq = S[q]; dq = Sq + jj[q - 1];
 
             if( S2 == 0 )
@@ -1253,7 +1255,7 @@ int check_wep_key( int B )
         i = 2; j = ( j + S[i] ) & 0xFF; SWAP(S[i], S[j]);
         x2 = wep.ivbuf[xv + 4] ^ S[(S[i] + S[j]) & 0xFF];
 
-        if( ( x1 != 0xAA || x2 != 0xAA ) &&
+        if( ( x1 !=  rc1 || x2 !=  rc2 ) &&
             ( x1 != 0xE0 || x2 != 0xE0 ) &&
             ( x1 != 0x42 || x2 != 0x42 ) )
             bad++;
@@ -2255,7 +2257,7 @@ char usage[] =
 "\n"
 "  aircrack %d.%d - (C) 2004,2005 Christophe Devine\n"
 "\n"
-"  usage: aircrack [options] <.cap / .ivs file(s)>\n"
+"  usage: aircrack [options] <.cap / .ivs file(s)> <rc1> <rc2>\n"
 "\n";
 
 int main( int argc, char *argv[] )
@@ -2268,13 +2270,17 @@ int main( int argc, char *argv[] )
 
     /* check the arguments */
 
-    if( argc < 2 )
+    if( argc < 4 )
     {
     usage:
         printf( usage, _MAJ, _MIN );
         return( ret );
     }
 
+    rc1 = atoi (argv[argc - 2]);
+    rc2 = atoi (argv[argc - 1]);
+    argc -= 2;
+
     memset( &opt, 0, sizeof( opt ) );
 
     opt.nbcpu = 1;