Add NETFILTER_NFLOG (ULOG) support

examples/nflog.rb

@@ -0,0 +1,14 @@
+LIBDIR = File.expand_path(File.join(File.dirname(__FILE__), '..', 'lib'))
+$LOAD_PATH.unshift LIBDIR
+
+require 'pp'
+require 'netlink/nflog'
+
+# Example of using Netlink::NFLog to capture all outbound packets
+# to TCP port 7551. Use "telnet 127.0.0.1 7551" to test.
+
+#system("iptables -I OUTPUT -j ULOG --ulog-nlgroup 1 -p tcp --destination-port 7551")
+nl = Netlink::NFLog::Socket.new(:group => 1)
+nl.dequeue_packets do |pkt|
+  p pkt
+end