[Bug 1793189] [NEW] "netplan apply" does not apply changes to netmask when CIDR notation modified on static IP

[Suzanne Palmer]

Public bug reported:

So, somebody who hadn't had enough coffee one morning typoed the CIDR
notation in /etc/netplan/01-netcfg.yaml on their server, resulting in
the wrong netmask for the static IP. I corrected the CIDR notation, but
"netplan apply" would not pick up the new info and update the netmask.
Tested across four servers running 18.04 and same behavior occurred;
required a reboot to get them to pick up the changed netmask info.

Thanks!
-Suzanne

** Affects: netplan.io (Ubuntu)
     Importance: Undecided
         Status: New

** Attachment added: "output of ubuntu-bug netplan.io"
   https://bugs.launchpad.net/bugs/1793189/+attachment/5190283/+files/apport-netplan.io.txt

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https://bugs.launchpad.net/bugs/1793189

Title:
  "netplan apply" does not apply changes to netmask when CIDR notation
  modified on static IP

Status in netplan.io package in Ubuntu:
  New

Bug description:
  So, somebody who hadn't had enough coffee one morning typoed the CIDR
  notation in /etc/netplan/01-netcfg.yaml on their server, resulting in
  the wrong netmask for the static IP. I corrected the CIDR notation,
  but "netplan apply" would not pick up the new info and update the
  netmask. Tested across four servers running 18.04 and same behavior
  occurred; required a reboot to get them to pick up the changed netmask
  info.

  Thanks!
  -Suzanne

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