Heya, Thanks Rich for the hints on IRC about journal bindings for libguestfs. The below script is what I ended up with. At least I learnt how to iterate over the systemd journal entries. $ sudo python find-ip.py 192.162.122.118 Obviously, this only searches for the _first_ occurance of the IP address and doesn't take into account the guest may have acquired a new IP on a later reboot. (I guess I'd have to do some thing like $ journalctl --lines=500 | egrep -i 'dhclient.*bound'). ------------------------------------------------------------------- #!/usr/bin/python #----------------------------------------------------------------- # PURPOSE: To find what IP address a guest has acquired from DHCP #----------------------------------------------------------------- image = "/var/lib/libvirt/images/ostack-controller.qcow2" root_filesystem = "/dev/fedora/root" import os import sys import re import guestfs g = guestfs.GuestFS () g.add_drive (image, format='qcow2') g.launch () #print g.list_partitions() # Set trace #g.set_trace (1) g.mount_options ("ro", root_filesystem, "/") # Open the journal g.journal_open ("/var/log/journal") # Loop over the journal to find a specific string count = 0 prog = re.compile("dhclient.*bound") while g.journal_next(): count += 1 output = g.journal_get() #print output flag = 0 for i in output: if i['attrname']=="MESSAGE" and i['attrval'].startswith("bound"): print i['attrval'].split()[2] flag = 1 break if flag == 1: break # Close the journal handle g.journal_close () # Unmount all the file system(s) g.umount_all () g.sync () sys.exit(0) ------------------------------------------------------------------- -- /kashyap