=== modified file 'src/common/protocols/ipv4.h'
--- src/common/protocols/ipv4.h	2012-09-16 14:13:44 +0000
+++ src/common/protocols/ipv4.h	2012-11-07 14:36:12 +0000
@@ -38,7 +38,7 @@
 /**
  * @brief The IPv4 header
  */
-struct ipv4_hdr
+struct __attribute__((packed)) ipv4_hdr
 {
 #if WORDS_BIGENDIAN == 1
 	unsigned int version:4;

=== modified file 'src/common/protocols/ipv6.h'
--- src/common/protocols/ipv6.h	2012-09-16 14:13:44 +0000
+++ src/common/protocols/ipv6.h	2012-11-07 14:27:40 +0000
@@ -36,7 +36,7 @@
 /**
  * @brief The IPv6 address
  */
-struct ipv6_addr
+struct __attribute__((packed)) ipv6_addr
 {
 	union
 	{
@@ -44,20 +44,20 @@
 		uint16_t __u6_addr16[8];
 		uint32_t __u6_addr32[4];
 	} __in6_u;
-#define s6_addr		__in6_u.__u6_addr8
-#define s6_addr16		__in6_u.__u6_addr16
-#define s6_addr32		__in6_u.__u6_addr32
+#define su6_addr		__in6_u.__u6_addr8
+#define su6_addr16		__in6_u.__u6_addr16
+#define su6_addr32		__in6_u.__u6_addr32
 };
 
 
 /**
  * @brief The IPv6 header
  */
-struct ipv6_hdr
+struct __attribute__((packed)) ipv6_hdr
 {
-	union
+	union __attribute__((packed))
 	{
-		struct ip6_hdrctl
+		struct __attribute__((packed)) ip6_hdrctl
 		{
 			uint32_t ip6_un1_flow;   /* 4 bits version, 8 bits TC,
 			                            20 bits flow-ID */

=== modified file 'src/common/protocols/udp.h'
--- src/common/protocols/udp.h	2012-09-16 14:13:44 +0000
+++ src/common/protocols/udp.h	2012-11-07 14:35:04 +0000
@@ -63,7 +63,7 @@
 
 
 /* UDP header */
-struct udphdr
+struct __attribute__((packed)) udphdr
 {
   uint16_t source;
   uint16_t dest;