Expected Behavior: Installer continues without warning about a corrupt Packages file. Behavior actually encountered: During install a red warning screen appears with the following message: [!!] Install the base system Debootstrap warning Warning: http://192.168.0.1/ubuntu/dists/lucid/restricted/binary-amd64/Packages was corrupt Pressing enter to continue allows the installer to continue installing. Reproduction steps: To reproduce this bug, create a pxe boot server and apt repo. Build a vm with 2 nics for the server. Configure the second nic (eth1) for a private network we will use to test netbooting the installer on a separate vm. Install Ubuntu with 10.04.04 amd64 alternate install cd for our server: http://releases.ubuntu.com/lucid/ubuntu-10.04.4-alternate-amd64.iso Boot Ubuntu and add the following lines to /etc/network/interfaces to configure eth1 with a static address replacing gateway with your internet gateway: auto eth1 iface eth1 inet static address 192.168.0.1 netmask 255.255.255.0 gateway 192.168.1.1 Reboot Ubuntu so that the second nic is configured at boot. Attach/insert the Ubuntu 10.04.04 cd to the vm so we can use it later. Install dnsmasq for dhcp and tftp servers: apt-get install dnsmasq Edit /etc/dnsmasq.conf adding the following lines to enable dhcp and tftp: dhcp-boot=pxelinux.0 dhcp-range=192.168.0.50,192.168.0.150,12h enable-tftp interface=eth1 Restart dnsmasq: service dnsmasq restart Mount the Ubuntu 10.04 cd’s install/tftpboot directory under /var/lib/tftpboot: mkdir /var/lib/tftpboot mount --bind /media/Ubuntu\ 10.04.4\ LTS\ amd64/install/netboot/ /var/lib/tftpboot Create pxe boot config file /root/mydefault containing the following lines: TIMEOUT 50 PROMPT 1 default netboot nabel netboot kernel ubuntu-installer/amd64/linux append vga=normal local=en_US setup/layoutcode=en_US console-setup/layoutcode=us initrd=ubuntu-installer/amd64/initrd.gz ks=http://192.168.0.1/ks.cfg Note above, ks=http://192.168.0.1/ks.cfg points to the kickstart file. Mount mydefault under /var/lib/tftpboot: mount --bind /root/mydefault /var/lib/tftpboot/pxelinux.cfg/default To set up apt repo, mount the Ubuntu cd under /var/www/ubuntu: mkdir -p /var/www/ubuntu mount --bind /media/Ubuntu\ 10.04.4\ LTS\ amd64/ /var/www/ubuntu Install apache to serve packages via http for apt repo: apt-get install apache2 Create the kickstart config file in /var/www/ks.cfg containing the following lines: ########################################################################### # Installer Section ########################################################################### #-------------------------------------------------------------------------- # Installation Options #-------------------------------------------------------------------------- # # Install OS in text mode # install text # # System Language # lang en_US langsupport en_US # # System Keyboard and Mouse Settings # keyboard us # # Timezone Setting # timezone America/Chicago #-------------------------------------------------------------------------- # License Key #-------------------------------------------------------------------------- key none url --url http://192.168.0.1/ubuntu/ network --device=eth0 --bootproto=dhcp --nameserver 8.8.8.8,8.8.4.4 rootpw --plaintext ubuntu user --disabled reboot firewall --disabled #-------------------------------------------------------------------------- # Partitions #-------------------------------------------------------------------------- bootloader --location=mbr zerombr clearpart --all --initlabel part / --fstype ext4 --size=1 --grow --asprimary part /boot --fstype ext4 --size=250 --asprimary part /var --fstype ext4 --size=5120 part /var/log --fstype ext4 --size=5120 part /var/log/audit --fstype ext4 --size=1024 part swap --size=4096 --asprimary #-------------------------------------------------------------------------- # Packages #-------------------------------------------------------------------------- %packages ubuntu-desktop %pre %post Boot a second vm instance via PXE. The installer should netboot and begin installing. A red screen will appear after while with the following warning: [!!] Install the base system Debootstrap warning Warning: http://192.168.0.1/ubuntu/dists/lucid/restricted/binary-amd64/Packages was corrupt Pressing enter to continue allows the installer to continue installing.