diff --git a/ethernet.hh b/ethernet.hh
new file mode 100644
index 0000000000..18c7a7e3f2
--- /dev/null
+++ b/ethernet.hh
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2014 Cloudius Systems, Ltd.
+ */
+
+#ifndef ETHERNET_HH_
+#define ETHERNET_HH_
+
+#include <array>
+#include "byteorder.hh"
+
+namespace net {
+
+using ethernet_address = std::array<uint8_t, 6>;
+
+struct eth_hdr {
+    ethernet_address dst_mac;
+    ethernet_address src_mac;
+    packed<uint16_t> eth_proto;
+    template <typename Adjuster>
+    auto adjust_endianness(Adjuster a) {
+        return a(eth_proto);
+    }
+} __attribute__((packed));
+
+}
+
+#endif /* ETHERNET_HH_ */
diff --git a/ip.hh b/ip.hh
index 7340a7d843..86097d49ea 100644
--- a/ip.hh
+++ b/ip.hh
@@ -13,20 +13,8 @@
 
 namespace net {
 
-using ethernet_address = std::array<uint8_t, 6>;
-
 uint16_t ip_checksum(void* data, size_t len);
 
-struct eth_hdr {
-    ethernet_address dst_mac;
-    ethernet_address src_mac;
-    packed<uint16_t> eth_proto;
-    template <typename Adjuster>
-    auto adjust_endianness(Adjuster a) {
-        return a(eth_proto);
-    }
-} __attribute__((packed));
-
 struct ip_hdr {
     uint8_t ihl : 4;
     uint8_t ver : 4;
diff --git a/net.hh b/net.hh
index 7464ee6523..0261363f9b 100644
--- a/net.hh
+++ b/net.hh
@@ -7,6 +7,7 @@
 
 #include "reactor.hh"
 #include "ip.hh"
+#include "ethernet.hh"
 #include <unordered_map>
 
 namespace net {