gPXE Packet Dumps
- IPv6
  - ICMPv6
- HTTP Booting
  - Successful hit to an IPv6 HTTP server

gPXE Packet Dumps

IPv6

ICMPv6

Invalid destination address

248	39.552283	fe80::224:8cff:fe1d:d43	::	ICMPv6	Neighbor solicitation for 2001:44b8:7222:a50::3 from 00:24:8c:1d:0d:43

Note the address of “::” as the destination, which is likely caused by the routing trying to send packets to the gateway (which is all zero, as this is just a link-local address).

It's obvious that I need to add some checks for destinations which are uniquely identifiable (eg, FF02::n). Perhaps an “if multicast, don't sub in a gateway” check?

HTTP Booting

Successful hit to an IPv6 HTTP server

7259	1153.200683	2001:44b8:7222:a50::3	fe80::224:8cff:fe1d:d43	TCP	search-agent > 11327 [PSH, ACK] Seq=1443212282 Ack=60851570 Win=14280 Len=493 TSV=1479476 TSER=130305

HTTP/1.1 404 Not Found
Date: Mon, 30 May 2011 10:12:21 GMT
Server: Apache/2.2.17 (Ubuntu)
Vary: Accept-Encoding
Content-Length: 290
Connection: close
Content-Type: text/html; charset=iso-8859-1

<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>404 Not Found</title>
</head><body>
<h1>Not Found</h1>
<p>The requested URL /test.bin was not found on this server.</p>
<hr>
<address>Apache/2.2.17 (Ubuntu) Server at 2001:44b8:7222:a50: Port 3</address>
</body></html>

Successful HTTP request (even though it ended in a 404) to an IPv6 HTTP server from one of my test machines.

Still need to do a fair bit of work on getting NDP working nicely and trying to avoid using a link-local address for all network access.

Trace: • packetdumps