diff -ruN ettercap-NG-0.7.3-old/configure ettercap-NG-0.7.3-new/configure
--- ettercap-NG-0.7.3-old/configure	2006-10-03 18:24:09.000000000 +0200
+++ ettercap-NG-0.7.3-new/configure	2006-10-03 18:28:57.000000000 +0200
@@ -31759,7 +31759,7 @@
 
    OLDLDFLAGS="${LDFLAGS}"
    OLDLIBS="${LIBS}"
-   LDFLAGS="$LNETLIB"
+   LDFLAGS="$LDFLAGS $LNETLIB"
    LIBS="$LIBS"
 
 echo "$as_me:$LINENO: checking for libnet_adv_free_packet in -lnet" >&5
diff -ruN ettercap-NG-0.7.3-old/configure.in ettercap-NG-0.7.3-new/configure.in
--- ettercap-NG-0.7.3-old/configure.in	2006-10-03 18:24:09.000000000 +0200
+++ ettercap-NG-0.7.3-new/configure.in	2006-10-03 18:26:45.000000000 +0200
@@ -500,7 +500,7 @@
 ]
 )
 
-EC_CHECK_FUNC(net, libnet_adv_free_packet, $LNETLIB, $LIBS,, AC_MSG_ERROR([Incorrect libnet version. libnet >= 1.1.2.1 required]))
+EC_CHECK_FUNC(net, libnet_adv_free_packet, $LDFLAGS $LNETLIB, $LIBS,, AC_MSG_ERROR([Incorrect libnet version. libnet >= 1.1.2.1 required]))
 
 dnl ------------------
 dnl Checks for openssl
