eah->pa_src_net  = sat->s_net;
        eah->pa_src_node = sat->s_node;
 
-       memset(eah->hw_dst, '\0', ETH_ALEN);
+       eth_zero_addr(eah->hw_dst);
 
        eah->pa_dst_zero = 0;
        eah->pa_dst_net  = a->target_addr.s_net;
        eah->pa_src_node = us->s_node;
 
        if (!sha)
-               memset(eah->hw_dst, '\0', ETH_ALEN);
+               eth_zero_addr(eah->hw_dst);
        else
                ether_addr_copy(eah->hw_dst, sha);
 
        eah->pa_src_net  = us->s_net;
        eah->pa_src_node = us->s_node;
 
-       memset(eah->hw_dst, '\0', ETH_ALEN);
+       eth_zero_addr(eah->hw_dst);
 
        eah->pa_dst_zero = 0;
        eah->pa_dst_net  = us->s_net;