diff --git a/cf/bsdos.h b/cf/bsdos.h
index 4c86cafe..828efbca 100644
--- a/cf/bsdos.h
+++ b/cf/bsdos.h
@@ -71,3 +71,7 @@ extern int h_errno;
 #define SET_TIME(x, y)	(*(x) = (y))
 #define ADD_TIME(d, s1, s2) (*(d) = *(s1) + *(s2))
 #define SET_MAX_TIME(x)	(*(x) = INT_MAX)
+
+#if defined (USE_DEFAULT_NETWORK)
+#  define USE_BPF
+#endif
diff --git a/cf/freebsd.h b/cf/freebsd.h
index d76a8271..ab58fd8c 100644
--- a/cf/freebsd.h
+++ b/cf/freebsd.h
@@ -75,3 +75,7 @@ extern int h_errno;
 #define SET_MAX_TIME(x)	(*(x) = INT_MAX)
 
 #define HAVE_SIN_LEN
+
+#if defined (USE_DEFAULT_NETWORK)
+#  define USE_BPF
+#endif
diff --git a/cf/linux.h b/cf/linux.h
index ffbefbdf..eab26304 100644
--- a/cf/linux.h
+++ b/cf/linux.h
@@ -109,5 +109,6 @@ extern int h_errno;
 #define ADD_TIME(d, s1, s2) (*(d) = *(s1) + *(s2))
 #define SET_MAX_TIME(x)	(*(x) = INT_MAX)
 
-
-
+#if defined (USE_DEFAULT_NETWORK)
+#  define USE_SOCKETS
+#endif
diff --git a/cf/netbsd.h b/cf/netbsd.h
index f78bbc7c..aa7b3c82 100644
--- a/cf/netbsd.h
+++ b/cf/netbsd.h
@@ -74,3 +74,7 @@ extern int h_errno;
 #define SET_MAX_TIME(x)	(*(x) = INT_MAX)
 
 #define HAVE_SIN_LEN
+
+#if defined (USE_DEFAULT_NETWORK)
+#  define USE_BPF
+#endif
diff --git a/cf/ultrix.h b/cf/ultrix.h
index 2aff6f6f..d179dcde 100644
--- a/cf/ultrix.h
+++ b/cf/ultrix.h
@@ -101,3 +101,8 @@ extern int h_errno;
 #define SET_TIME(x, y)	(*(x) = (y))
 #define ADD_TIME(d, s1, s2) (*(d) = *(s1) + *(s2))
 #define SET_MAX_TIME(x)	(*(x) = INT_MAX)
+
+
+#if defined (USE_DEFAULT_NETWORK)
+#  define USE_SOCKETS
+#endif
diff --git a/includes/cf/bsdos.h b/includes/cf/bsdos.h
index 4c86cafe..828efbca 100644
--- a/includes/cf/bsdos.h
+++ b/includes/cf/bsdos.h
@@ -71,3 +71,7 @@ extern int h_errno;
 #define SET_TIME(x, y)	(*(x) = (y))
 #define ADD_TIME(d, s1, s2) (*(d) = *(s1) + *(s2))
 #define SET_MAX_TIME(x)	(*(x) = INT_MAX)
+
+#if defined (USE_DEFAULT_NETWORK)
+#  define USE_BPF
+#endif
diff --git a/includes/cf/freebsd.h b/includes/cf/freebsd.h
index d76a8271..ab58fd8c 100644
--- a/includes/cf/freebsd.h
+++ b/includes/cf/freebsd.h
@@ -75,3 +75,7 @@ extern int h_errno;
 #define SET_MAX_TIME(x)	(*(x) = INT_MAX)
 
 #define HAVE_SIN_LEN
+
+#if defined (USE_DEFAULT_NETWORK)
+#  define USE_BPF
+#endif
diff --git a/includes/cf/linux.h b/includes/cf/linux.h
index ffbefbdf..eab26304 100644
--- a/includes/cf/linux.h
+++ b/includes/cf/linux.h
@@ -109,5 +109,6 @@ extern int h_errno;
 #define ADD_TIME(d, s1, s2) (*(d) = *(s1) + *(s2))
 #define SET_MAX_TIME(x)	(*(x) = INT_MAX)
 
-
-
+#if defined (USE_DEFAULT_NETWORK)
+#  define USE_SOCKETS
+#endif
diff --git a/includes/cf/netbsd.h b/includes/cf/netbsd.h
index f78bbc7c..aa7b3c82 100644
--- a/includes/cf/netbsd.h
+++ b/includes/cf/netbsd.h
@@ -74,3 +74,7 @@ extern int h_errno;
 #define SET_MAX_TIME(x)	(*(x) = INT_MAX)
 
 #define HAVE_SIN_LEN
+
+#if defined (USE_DEFAULT_NETWORK)
+#  define USE_BPF
+#endif
diff --git a/includes/cf/ultrix.h b/includes/cf/ultrix.h
index 2aff6f6f..d179dcde 100644
--- a/includes/cf/ultrix.h
+++ b/includes/cf/ultrix.h
@@ -101,3 +101,8 @@ extern int h_errno;
 #define SET_TIME(x, y)	(*(x) = (y))
 #define ADD_TIME(d, s1, s2) (*(d) = *(s1) + *(s2))
 #define SET_MAX_TIME(x)	(*(x) = INT_MAX)
+
+
+#if defined (USE_DEFAULT_NETWORK)
+#  define USE_SOCKETS
+#endif