[Bug 1732522] Re: [2.3] Ephemeral boot environment does not renew DHCP leases

[Scott Moser]

This issue is discussed in a document at
 https://docs.google.com/document/d/14xH2Q3VH_7ArXzRPhqogfACeOI0rmEinm_Q98imNWlc/

Its all about "transition" of networking information from the initramfs
environment which is configured by the kernel command line over to the
"real root".

The Ubuntu foundations team is expecting to have dhcp transition
correctly in 18.04.


** Also affects: systemd (Ubuntu)
   Importance: Undecided
       Status: New

** Also affects: cloud-initramfs-tools (Ubuntu)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1732522

Title:
  [2.3] Ephemeral boot environment does not renew DHCP leases

Status in cloud-init:
  New
Status in MAAS:
  Fix Committed
Status in cloud-initramfs-tools package in Ubuntu:
  New
Status in systemd package in Ubuntu:
  New

Bug description:
  I started commissioning+hardware testing on a machine, and while the
  machine was testing (for 2hrs+) i noticed that the IP address had
  disappeared. The machine has the MAC of  00:25:90:4c:e7:9e and IP of
  192.168.0.211 from the dynamic range.

  Checking the MAAS server, I noticed that the IP/MAC was in the ARP
  table:

  andreserl at maas:/var/lib/maas/dhcp$ arp -a | grep 211
  192-168-9-211.maas (192.168.9.211) at 00:25:90:4c:e7:9e [ether] on bond-lan

  Checking the leases file has the following:
  http://pastebin.ubuntu.com/25969442/

  Then I checked a couple areas of MAAS:
   - Device discovery, the machine wasn't there.
   - Subnet details page, the machine wasn't there (e.g. as observed)

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