[Bug 1466790] Re: dhclient does not remain running on boot

[Martin Pitt]

** Changed in: systemd (Ubuntu)
       Status: In Progress => Fix Committed

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Title:
  dhclient does not remain running on boot

Status in systemd package in Ubuntu:
  Fix Committed

Bug description:
  Not sure whether this is a systemd or ifupdown issue. I just happened to notice today for a Wily VM (set up from server iso) that I failed to get a DNS resolution for a VM I started earlier the day. DNS updates in my case are related to DHCP updates. And on the DHCP/DNS server I noticed that the IP address had been removed at some point. Looking at the VM, I find no dhclient being started. When I manually run ifdown and ifup on the interface this does happen. But not whenever I boot.
  Curious about this I also checked a Vivid VM (also server install) and this looks the same. However for Vivid this seems fixed in the latest versions.

  Network config in /etc/network/interfaces:
  auto eth0
  iface eth0 inet dhcp

  Expected result:
  dhclient running for eth0

  Actual result after boot:
  No dhclient process is running.

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