A long time, this apeared on the list:> Date: Tue, 23 Jul 2002 08:17:26 -0700 > From: H. Peter Anvin <hpa at zytor.com> > To: Gal Goldschmidt <gal at cs.haifa.ac.il> > Cc: syslinux at zytor.com > Subject: Re: [syslinux] ISC DHCPD Problem and Solution. > > Gal Goldschmidt wrote: > > > > All the station in that group suddenly did not receive the net mask, routers, > > DNS server and domain option. > > > > Interesting. That either implies a bug in DHCPD 3.1p9, or some really > funky packets sent by your host. It's extremely odd that it works > without it... > > Could you send me a packet trace (tcpdump -w) of the negotiation of one > of these hosts with and without this option? > > -hpaI have the same problem (Thanks Gal!) and since I didn't see an answer to hpa's question, made tcpdumps. Client is 193.110.157.25, dhcp/tftp-hpa server is 193.110.157.30. *ware used: Intel eepro/100+ (82557/8/9 rev 9, board assembly 748564-005, romchecksum 0xdb8681d) syslinux 1.76-1.i386.rpm intel boot agent 2.6 build 004 intel undi pxe-2.0 build 071 tftp-hpa-0.30 ISC dhcpd V3.0pl1 tcpdumps are at: http://www.xtdnet.nl/paul/pxe/ Paul
Paul Wouters wrote:> > I have the same problem (Thanks Gal!) and since I didn't see an answer > to hpa's question, made tcpdumps. Client is 193.110.157.25, dhcp/tftp-hpa > server is 193.110.157.30. > > *ware used: > Intel eepro/100+ (82557/8/9 rev 9, board assembly 748564-005, romchecksum > 0xdb8681d) > > syslinux 1.76-1.i386.rpm > intel boot agent 2.6 build 004 > intel undi pxe-2.0 build 071 > tftp-hpa-0.30 > ISC dhcpd V3.0pl1 > > tcpdumps are at: http://www.xtdnet.nl/paul/pxe/ >Could you also send the dhcpd configuration for these hosts? -hpa
Paul Wouters wrote:> > I have the same problem (Thanks Gal!) and since I didn't see an answer > to hpa's question, made tcpdumps. Client is 193.110.157.25, dhcp/tftp-hpa > server is 193.110.157.30. > > *ware used: > Intel eepro/100+ (82557/8/9 rev 9, board assembly 748564-005, romchecksum > 0xdb8681d) > > syslinux 1.76-1.i386.rpm > intel boot agent 2.6 build 004 > intel undi pxe-2.0 build 071 > tftp-hpa-0.30 > ISC dhcpd V3.0pl1 > > tcpdumps are at: http://www.xtdnet.nl/paul/pxe/ >I looked at these dumps, and they look completely normal to me; the transfer clearly is operating as it should. The names of your tcpdumps imply you're using PXE vendor-option-space options. I generally recommend avoiding them unless you really need them; and if so to use a real PXE server. -hpa
Paul Wouters wrote:> > I have the same problem (Thanks Gal!) and since I didn't see an answer > to hpa's question, made tcpdumps. Client is 193.110.157.25, dhcp/tftp-hpa > server is 193.110.157.30. > > *ware used: > Intel eepro/100+ (82557/8/9 rev 9, board assembly 748564-005, romchecksum > 0xdb8681d) > > syslinux 1.76-1.i386.rpm > intel boot agent 2.6 build 004 > intel undi pxe-2.0 build 071 > tftp-hpa-0.30 > ISC dhcpd V3.0pl1 > > tcpdumps are at: http://www.xtdnet.nl/paul/pxe/ >Oh yes, please use a longer snaplen (tcpdump -s 2000 -w ...); the tcpdumps you posted don't contain enough information. -hpa