LTSP client autologin does not work with dnsmasq as DHCP server

[MohanMSS]

I am using hardy 8.04.3 in standard 2-NIC edubuntu LTSP configuration except dnsmasq is used as the DHCP server instead of the default dhcpd3.

I set the lts.conf file at /var/lib/tftpboot/ltsp/i386/lts.conf with options to autologin the clients - tried with both MAC addresses and IP addresses - autologin does not work - I keep getting the normal login screen at the client.

Got on IRC and alkisg helped narrow down the problem.

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 <alkisg> E.g. if you only send the filename for net:PXEClient, that would be the problem
 <mss> is there a sample dnsmasq.conf file ?
 <mss> I don't have remote access to server unfortunately
 <alkisg> Yes, there is one
 <alkisg> Hmmm.... I was talking about /usr/share/doc/ltsp-server/examples/dhcpd-dnsmasq, but now I see that it has the problem I'm mentioning :)
 <alkisg> So a bug report should be filed.
 <mss> I did use /usr/share/doc/ltsp-server/examples/dhcpd-dnsmasq to create the dnsmasq.conf file...
 <alkisg> OK so that was the source of the problem
 <alkisg> The string "Linux ipconfig" should be also checked for when sending the filename
 <mss> alkisg, if it not too much trouble ....... could you let me know the corrections to be done , so I can check ?
 <alkisg> mss, *without* checking, I'd say that you need to add the line: dhcp-vendorclass=pxe,"Linux ipconfig"

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Filing this so that the correct options will be included in the /usr/share/doc/ltsp-server/examples/dhcpd-dnsmasq file.

-Mohan

[Alkis Georgopoulos (alkisg)]

As said on irc, the missing line is:
dhcp-vendorclass=pxe,"Linux ipconfig"

But other significant directives are missing there, e.g.
dhcp-no-override

So I propose to replace the dhcpd-dnsmasq example file that ships with ltsp-server with the attached one.

[Vagrant Cascadian (vagrantc)]

committed a slightly modified version upstream.

[Alkis Georgopoulos (alkisg)]

The fix was included in ltsp-5.1.86, and Karmic beta now has 5.1.88, so marking as "Fix Released".