--- /dev/null
+diff -ur olsrd.old/src/cfgparser/oparse.c olsrd.dev/src/cfgparser/oparse.c
+--- olsrd.old/src/cfgparser/oparse.c 2006-01-01 17:15:57.000000000 +0100
++++ olsrd.dev/src/cfgparser/oparse.c 2006-10-09 01:06:27.000000000 +0200
+@@ -1921,6 +1921,7 @@
+ return -1;
+ }
+ h->netmask.v4 = in.s_addr;
++ h->net.v4 &= h->netmask.v4;
+ /* Queue */
+ h->next = cnf->hna4_entries;
+ cnf->hna4_entries = h;