Date: Tue, 29 May 2012 11:08:04 +0200 From: pacija <pacija@gmail.com> To: Daniel Braniss <danny@cs.huji.ac.il> Cc: freebsd-hackers@freebsd.org, Rick Macklem <rmacklem@uoguelph.ca> Subject: Re: pxe + nfs + microsoft dhcp Message-ID: <1338282484.1278.6.camel@vault.mimar.rs> In-Reply-To: <E1SZGH7-000Pza-3o@kabab.cs.huji.ac.il> References: <1559609187.982427.1338244921382.JavaMail.root@erie.cs.uoguelph.ca> <E1SZGH7-000Pza-3o@kabab.cs.huji.ac.il>
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--=-etjkwQYOTmf8U9KY0eW8 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit > > pacija wrote: > > > > ----- Original Message ----- > > > Dear list readers, > > > > > > I am having a problem with pxe loader on FreeBSD 9.0 i386 release. No > > > matter what value I put for DHCP option 017 (Root Path) in Microsoft > > > DHCP server, pxe always sets root path: > > > pxe_open: server path: / > > > > > > I've read src/sys/boot/i386/libi386/pxe.c as instructed in handbook, > > > and > > > i learned there that root path is a failover value which gets set if > > > no > > > valid value is supplied by DHCP server. At first i thought that > > > Microsoft DHCP does not send it but i confirmed with windump it does: > > > > > > -- > > > 15:46:49.505748 IP (tos 0x0, ttl 128, id 6066, offset 0, flags [none], > > > proto: UDP > > > (17), length: 392) dhcp.domain.tld.67 > 255.255.255.255.68: [bad udp > > > cksum 4537!] > > > BOOTP/DHCP, Reply, length 364, xid 0xdcdb5309, Flags [ none ] (0x0000) > > > Your-IP 192.168.218.32 > > > Server-IP dhcp.domain.tld > > > Client-Ethernet-Address 00:19:db:db:53:09 (oui Unknown) > > > file "FreeBSD/install/boot/pxeboot" > > > Vendor-rfc1048 Extensions > > > Magic Cookie 0x63825363 > > > DHCP-Message Option 53, length 1: Offer > > > Subnet-Mask Option 1, length 4: 255.255.255.0 > > > RN Option 58, length 4: 345600 > > > RB Option 59, length 4: 604800 > > > Lease-Time Option 51, length 4: 691200 > > > Server-ID Option 54, length 4: dhcp.domain.tld > > > Default-Gateway Option 3, length 4: gate.domain.tld > > > Domain-Name-Server Option 6, length 4: dhcp.domain.tld > > > Domain-Name Option 15, length 1: "^@" > > > RP Option 17, length 42: > > > "192.168.218.32:/b/tftpboot/FreeBSD/install/^@" > > > BF Option 67, length 29: "FreeBSD/install/boot/pxeboot^@" > > What about getting rid of the "^@" characters at the end of > > the strings? > > the ^@ seems to have been added by windump, but check this out: > the length of the root-path > 192.168.218.32:/b/tftpboot/FreeBSD/install/ > is 43!, not 42 as shown, and the ^@ (NULL) is the 44th! > on the other hand, > FreeBSD/install/boot/pxeboot > is 28! > > can you make available the raw data (cab) of the entire transaction, including > the request for the boot files? > > danny > > Hi Danny, thank you for looking into it. I did the dump catching ip broadcasts (attached file), hope that is the correct one: windump -nvvv -s 0 -w pxedump.cab ip broadcast I would like to try to get rid of "^@" characters but i am going to need instruction what exactly do in need to do in order to accomplish it. Regards, --=-etjkwQYOTmf8U9KY0eW8--
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