--- libdnet-stripped/configure.orig	2011-09-28 06:55:47 UTC
+++ libdnet-stripped/configure
@@ -14344,11 +14344,8 @@ $as_echo_n "checking for Berkeley Packet
     if test "${ac_cv_dnet_bsd_bpf+set}" = set; then
   $as_echo_n "(cached) " >&6
 else
-  if test -c /dev/bpf0 ; then
-	    ac_cv_dnet_bsd_bpf=yes
-	else
-	    ac_cv_dnet_bsd_bpf=no
-	fi
+# PR ports/154353 : support building in FreeBSD jail
+    ac_cv_dnet_bsd_bpf=yes
 fi
 
     { $as_echo "$as_me:$LINENO: result: $ac_cv_dnet_bsd_bpf" >&5