patch-2.4.27 linux-2.4.27/include/linux/if_arp.h

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diff -urN linux-2.4.26/include/linux/if_arp.h linux-2.4.27/include/linux/if_arp.h
@@ -85,6 +85,7 @@
 #define ARPHRD_IEEE80211_PRISM 802	/* IEEE 802.11 + Prism2 header  */
 
 #define ARPHRD_VOID	  0xFFFF	/* Void type, nothing is known */
+#define ARPHRD_NONE	  0xFFFE	/* zero header length */
 
 /* ARP protocol opcodes. */
 #define	ARPOP_REQUEST	1		/* ARP request			*/

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