Applied patch from Mats Erik Andersson <mats.andersson@gisladisker.se>

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=427852#30

Adds support for IPv6

Also fixes:

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=477928 (minor typo)

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=595169 (performance problem
with address hashing)

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=598367 (failing link address
detection for GNU/kfreebsd)

cfgfile.c

@@ -36,6 +36,8 @@ char * config_directives[] = {
 	"log-scale", 
 	"max-bandwidth",
 	"net-filter", 
+	"net-filter6", 
+        "link-local",
 	"port-display", 
 	NULL
 };