Public bug reported:
Reporting a new bug since the fix for bug 1197484, as suspected, did not
fix the issue. I am reporting again against isc-dhcp but the issue
appeared for the first time when Linux version 3.10.0-2-generic was
first used. Also, using utah this is easily reproducible irrespective of
the host ( confirmed on precise and raring hosts) and appears to only
happen during the first boot after the installation. I say this because,
I tried to reboot an impacted VM a number of times (after sudo ifdown
eth0 and sudo ifup eth0) but could not reproduce the issue. Logging
into an impacted system, running ifconfig does not list an ipv4 address
for eth0, when the issue occurs.
Summary of the issue:
The ssh/ ping requests from the host to the client VMs of preseeded saucy
server installations fail on first reboot after fresh installations of 20130703
images onwards. The ping requests to the IP address allocated to the VMs during
the installations fail with 'Destination Host Unreachable'. There does not
appear to be anything wrong during installations.
The VMs use libvirt/KVM and using bridged interface. This issue happens not
always but most of the time. With isc-dhcp - 4.2.4-7ubuntu3 we do NOT see the
'dhclient: execve (/sbin/dhclient-script, ...): Permission denied' in the boot
log.
The installer syslog and boot log of one of the latest failures are
attached.
==============================================
How to reproduce:
1. Install utah using
sudo apt-add-repository -y ppa:utah/stable
sudo apt-get update
sudo apt-get install utah
2. Now run the installation test using
sudo -u utah -i run_utah_tests.py -i /path/to/saucy-server-amd64.iso -p
lp:ubuntu-test-cases/server/preseeds/mail-server.preseed
lp:ubuntu-test-cases/server/runlists/mail-server.run -x
/etc/utah/bridged-network-vm.xml
3. Now it could be seen that the the connection to the VMs from the host
after the installation fails.
** Affects: isc-dhcp (Ubuntu)
Importance: Undecided
Status: New
** Tags: iso-testing qa-daily-testing rls-s-incoming
** Attachment added: "utah-11601-boot.log"
https://bugs.launchpad.net/bugs/1202203/+attachment/3739926/+files/utah-11601-boot.log
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https://bugs.launchpad.net/bugs/1202203
Title:
Connection requests to saucy server VMs from a hosts fail after fresh
preseeded VM installs
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