--- ppp-2.4.1/pppd/Makefile.linux.orig	Sun Jan 20 12:20:21 2002
+++ ppp-2.4.1/pppd/Makefile.linux	Sun Jan 20 12:20:32 2002
@@ -46,7 +46,7 @@
 # This requires that the libpcap library and headers be installed
 # and that the kernel driver support PPP packet filtering, which it
 # doesn't yet.
-#FILTER=y
+FILTER=y
 
 HAS_SHADOW=y
 #USE_PAM=y