udhcpc[6]: make log2 messages for chaddr field indented like the rest

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

networking/udhcp/d6_packet.c

@@ -18,7 +18,7 @@ void FAST_FUNC d6_dump_packet(struct d6_packet *packet)
 		return;
 
 	bb_error_msg(
-		"xid %x"
+		" xid %x"
 		, packet->d6_xid32
 	);
 	//*bin2hex(buf, (void *) packet->chaddr, sizeof(packet->chaddr)) = '\0';

networking/udhcp/dhcpc.c

@@ -1534,6 +1534,13 @@ int udhcpc_main(int argc UNUSED_PARAM, char **argv)
 			 */
 					if (send_renew(xid, server_addr, requested_ip) >= 0) {
 						timeout >>= 1;
+//TODO: the timeout to receive an answer for our renew should not be selected
+//with "timeout = lease_seconds / 2; ...; timeout = timeout / 2": it is often huge.
+//Waiting e.g. 4*3600 seconds for a reply does not make sense
+//(if reply isn't coming, we keep an open socket for hours),
+//it should be something like 10 seconds.
+//Also, it's probably best to try sending renew in kernel mode a few (3-5) times
+//and fall back to raw mode if it does not work.
 						continue;
 					}
 					/* else: error sending.

networking/udhcp/packet.c

@@ -41,7 +41,7 @@ void FAST_FUNC udhcp_dump_packet(struct dhcp_packet *packet)
 		return;
 
 	bb_error_msg(
-		//"op %x"
+		//" op %x"
 		//" htype %x"
 		" hlen %x"
 		//" hops %x"
@@ -52,7 +52,6 @@ void FAST_FUNC udhcp_dump_packet(struct dhcp_packet *packet)
 		" yiaddr %x"
 		" siaddr %x"
 		" giaddr %x"
-		//" chaddr %s"
 		//" sname %s"
 		//" file %s"
 		//" cookie %x"
@@ -68,14 +67,13 @@ void FAST_FUNC udhcp_dump_packet(struct dhcp_packet *packet)
 		, packet->yiaddr
 		, packet->siaddr_nip
 		, packet->gateway_nip
-		//, packet->chaddr[16]
 		//, packet->sname[64]
 		//, packet->file[128]
 		//, packet->cookie
 		//, packet->options[]
 	);
 	*bin2hex(buf, (void *) packet->chaddr, sizeof(packet->chaddr)) = '\0';
-	bb_error_msg("chaddr %s", buf);
+	bb_error_msg(" chaddr %s", buf);
 }
 #endif