--- src/checksum.c.orig	Fri Sep 10 09:43:37 1999
+++ src/checksum.c	Thu Nov  4 12:19:30 1999
@@ -222,7 +222,7 @@
 
 unsigned short ip_compute_csum(unsigned short * addr,int len)
 {
-return ip_check_ext(adr,len,0);
+return ip_check_ext(addr,len,0);
 }
 
 struct psuedo_hdr