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hi all,

i've found a little problem in the arpcache code segment: if you happen to
have an empty local arpcache and you try to start wackamole you won't
succeed, because the sample_arp_cache() function is returning an NULL
pointer in that very case.

please find attached a patch which is fixing the problem mentioned above.
the patch is against wackamole-2.0.0.

btw: thanks for that great piece of software!

cheers,
-- matt.
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--- arpcache.c 2002-09-22 20:43:34.000000000 +0200
+++ arpcache.c.new 2003-10-02 13:38:01.000000000 +0200
@@ -90,9 +90,12 @@
}
}

- if( count == 0 && arpcache_psize > 0 ){
- arpcache_psize = 0;
+ if( count == 0 ){
+ Alarm(DEBUG, "Local arp-cache seems to be empty");
if(arpcache_private) free(arpcache_private);
+ arpcache_psize = 0;
+ arpcache_private = malloc(sizeof(address));
+ arpcache_private[0] = 0;
} else {
/* adjust array size (FIXME: should we really do this?) */
if( count != tmp_size ){

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