Comment 35 for bug 1551351

Major categorization aspects:
- this very important core functionality (properly reliable resource management of DHCP leases, also in suspend-to-RAM etc.) **NEVER EVER WORKS** (exclusively suspend-to-RAM use case here, ending up with stale IP address):
  - this did not work in 12.04LTS
  - this still did not work after upgrade to 14.04LTS
  - this STILL did not work after upgrade to 16.04LTS (recently upgraded, i.e. after activity of #12 which says that it DID work there, yet perhaps not suspend-to-RAM)
- importance of this bug should be "a lot higher than High"
  Justification:
  - messes with/breaks (CORRUPTS!!) environment even *beyond* local system scope (--> inacceptable!!), due to continuing communication via a stale IP address which has long since been re-assigned to other hosts (as can be verified via DNS query)
  - has been observed in *all* recent LTS releases (which are expected to work fine in large enterpriseish environments??)
--> Ubuntu release process is sorely missing reliable verification (persistently executed test case) for this core functionality, to ensure that this is (and keeps!) not causing damage, at least in production (stable) distributions

Example to achieve fixing stale IP (renew DHCP lease):
nmcli c
nmcli c down uuid <UUID>
nmcli c up uuid <UUID>