--- gvpe/src/vpn.C	2012/12/04 10:29:43	1.64
+++ gvpe/src/vpn.C	2013/07/16 16:44:37	1.65
@@ -1,6 +1,6 @@
 /*
     vpn.C -- handle the protocol, encryption, handshaking etc.
-    Copyright (C) 2003-2008,2010,2011 Marc Lehmann <gvpe@schmorp.de>
+    Copyright (C) 2003-2008,2010,2011,2013 Marc Lehmann <gvpe@schmorp.de>
  
     This file is part of GVPE.
 
@@ -80,7 +80,7 @@
   // the tricky part is rounding to the cipher key blocksize
   int mtu = conf.mtu - ETH_OVERHEAD - VPE_OVERHEAD - MAX_OVERHEAD;
   mtu += ETH_OVERHEAD - 6 - 6; // now we have the data portion
-  mtu -= mtu % EVP_CIPHER_block_size (CIPHER); // round
+  mtu -= mtu % BLOCK_SIZE (CIPHER); // round
   mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again
 
   char *env;