File arpwatch-no-source-zero.dif of Package arpwatch

--- a/arpwatch.c
+++ b/arpwatch.c
@@ -481,6 +481,16 @@ process_ether(u_char *u, const struct pc
 	if (toskip(sia))
 		return;
 
+	/* dhcp broadcasts source from 0.0.0.0 - ignore */
+	if (sia == 0) {
+		static u_char old_sea[6];
+		if (memcmp(old_sea, sea, 6)) {
+			dosyslog(LOG_INFO, "0-source", sia, sea, sha);
+			memcpy(old_sea, sea, 6);
+		}
+		return;
+	}
+
 	/* Watch for bogons */
 	if (isbogon(sia)) {
 		if (!quiet)