Index: sys/netinet/netdump_client.c
===================================================================
--- sys/netinet/netdump_client.c        (revision 213299)
+++ sys/netinet/netdump_client.c        (working copy)
@@ -972,7 +972,7 @@
        m->m_len = sizeof(*ah) + (2 * ah->ar_pln) + (2 * ah->ar_hln);
        m->m_pkthdr.len = m->m_len;
 
-       bcopy(dst.octet, ar_tha(ah), ETHER_ADDR_LEN);
+       bcopy(ar_tha(ah), dst.octet, ETHER_ADDR_LEN);
        netdump_ether_output(m, ifp, dst, ETHERTYPE_ARP);
        *mb = NULL; /* Don't m_free upon return */
 }