diff --git a/common/netinet_common.h b/common/netinet_common.h
new file mode 100644
index 00000000..bf8f48eb
--- /dev/null
+++ b/common/netinet_common.h
@@ -0,0 +1,158 @@
+/*
+ *****************************************************************************
+ *
+ * File:    netinet_common.h
+ *
+ * Author:  Damien Stuart (dstuart@dstuart.org)
+ *
+ * Purpose: Header file for common network packet structures.  We roll our
+ *          own (actually copy) here in an effort to reduce the cross-
+ *          platform "hoop-jumping" we would need to do). 
+ *
+ *  License (GNU Public License):
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program; if not, write to the Free Software
+ *     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
+ *     USA
+ *
+ *****************************************************************************
+*/
+#ifndef NETINET_COMMON_H
+#define NETINET_COMMON_H
+
+#ifdef WIN32
+  #include <winsock2.h>
+  #include <ws2tcpip.h>
+#else
+  #if HAVE_SYS_SOCKET_H
+    #include <sys/socket.h>
+  #endif
+  #if HAVE_NETDB_H
+    #include <netdb.h>
+  #endif
+  #if HAVE_NETINET_IN_H
+    #include <netinet/in.h>
+  #endif
+  #if HAVE_ARPA_INET_H
+    #include <arpa/inet.h>
+  #endif
+  #if HAVE_NET_ETHERNET_H
+    #include <net/ethernet.h>
+  #endif
+#endif
+
+/* We will roll our own packet header structs. */
+    
+/* The IP header
+*/
+struct iphdr
+{
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+    unsigned int ihl:4;
+    unsigned int version:4;
+#elif __BYTE_ORDER == __BIG_ENDIAN
+    unsigned int version:4;
+    unsigned int ihl:4;
+#else
+  #error       "Please fix <bits/endian.h>"
+#endif
+    unsigned char tos;
+    unsigned short tot_len;
+    unsigned short id;
+    unsigned short frag_off;
+    unsigned char ttl;
+    unsigned char protocol;
+    unsigned short check;
+    unsigned int saddr;
+    unsigned int daddr;
+};
+
+/* The TCP header
+*/
+struct tcphdr
+{
+    unsigned short source;
+    unsigned short dest;
+    unsigned int seq;
+    unsigned int ack_seq;
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+    unsigned short res1:4;
+    unsigned short doff:4;
+    unsigned short fin:1;
+    unsigned short syn:1;
+    unsigned short rst:1;
+    unsigned short psh:1;
+    unsigned short ack:1;
+    unsigned short urg:1;
+    unsigned short res2:2;
+#elif __BYTE_ORDER == __BIG_ENDIAN
+    unsigned short doff:4;
+    unsigned short res1:4;
+    unsigned short res2:2;
+    unsigned short urg:1;
+    unsigned short ack:1;
+    unsigned short psh:1;
+    unsigned short rst:1;
+    unsigned short syn:1;
+    unsigned short fin:1;
+#else
+  #error "Adjust your <bits/endian.h> defines"
+#endif
+    unsigned short window;
+    unsigned short check;
+    unsigned short urg_ptr;
+};
+
+/* The UDP header
+*/
+struct udphdr {
+    unsigned short source;              /* source port */
+    unsigned short dest;                /* destination port */
+    unsigned short len;                 /* udp length */
+    unsigned short check;               /* udp checksum */
+};
+
+/* The ICMP header
+*/
+struct icmphdr
+{
+    unsigned char type;                 /* message type */
+    unsigned char code;                 /* type sub-code */
+    unsigned short checksum;
+    union
+    {
+        struct
+        {
+            unsigned short  id;
+            unsigned short  sequence;
+        } echo;                         /* echo datagram */
+        unsigned int    gateway;        /* gateway address */
+        struct
+        {
+            unsigned short  __notused;
+            unsigned short  mtu;
+        } frag;                         /* path mtu discovery */
+    } un;
+};
+
+#define ICMP_ECHOREPLY          0   /* Echo Reply */
+#define ICMP_DEST_UNREACH       3   /* Destination Unreachable */
+#define ICMP_SOURCE_QUENCH      4   /* Source Quench */
+#define ICMP_REDIRECT           5   /* Redirect (change route) */
+#define ICMP_ECHO               8   /* Echo Request */
+#define ICMP_TIME_EXCEEDED      11  /* Time Exceeded */
+#define ICMP_PARAMETERPROB      12  /* Parameter Problem */
+#define ICMP_TIMESTAMP          13  /* Timestamp Request */
+#define ICMP_TIMESTAMPREPLY     14  /* Timestamp Reply */
+#define ICMP_INFO_REQUEST       15  /* Information Request */
+#define ICMP_INFO_REPLY         16  /* Information Reply */
+#define ICMP_ADDRESS            17  /* Address Mask Request */
+#define ICMP_ADDRESSREPLY       18  /* Address Mask Reply */
+
+#endif  /* NETINET_COMMON_H */