[Bug 2044010] Re: netplan NM plugin generates broken connection for WPA-Enterprise PEAP

[Danilo Egea Gondolfo]

It seems to actually be a duplicate of this bug #2016625

It was fixed in this PR https://github.com/canonical/netplan/pull/358

But apparently it didn't make it to Jammy.

** Also affects: netplan.io (Ubuntu Jammy)
   Importance: Undecided
       Status: New

** Changed in: netplan.io (Ubuntu)
       Status: New => Triaged

** Changed in: netplan.io (Ubuntu Jammy)
       Status: New => Triaged

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Title:
  netplan NM plugin generates broken connection for WPA-Enterprise PEAP

Status in netplan.io package in Ubuntu:
  Triaged
Status in netplan.io source package in Jammy:
  Triaged

Bug description:
  When a WPA Enterprise PEAP connection is configured with the network-
  manager snap, the resulting netplan connection file generated doesn't
  include "auth.method", instead '802-1x.eap: "peap"' is included in
  "passthrough" stanza.

  "mywifi":
    auth:
      key-management: "eap"
      identity: "myid"
      phase2-auth: "mschapv2"
      password: "mypassword"
    networkmanager:
      name: "mywifi"
      passthrough:
        wifi-security.auth-alg: "open"
        802-1x.eap: "peap;"

  This results in a NM keyfile being generated with an incomplete
  [802-1x] stanza:

  [wifi-security]
  auth-alg=open 
  key-mgmt=wpa-eap

  [802-1x]
  eap=peap

  This is logged by the NM settings plugin:

  Nov 20 10:57:05 brain NetworkManager[6358]: <error> [1700495825.5266] BUG: the profile cannot be stored in keyfile format without becoming unusable: invalid connection: 802-1x.identity
  : property is missing

  Steps to reproduce:

  1. Install network-manager snap (I used 22/stable) on a Desktop system (for consistency I used 22.04 LTS)
  2. Stop NetworkManager service (sudo systemctl stop NetworkManager.service)
  3. Start NM from the snap (sudo snap start network-manager.networkmanager)
  4. Create connection:

  network-manager.nmcli con add type wifi con-name "mywifi" ifname
  "wlp4s0" ssid "mywifi" wifi-sec.auth wifi-sec.auth-alg open wifi-
  sec.key-mgmt wpa-eap 802-1x.eap peap 802-1x.identity "myid"
  802-1x.password "mypassword" 802-1x.phase2-auth mschapv2
  802-1x.system-certs no

  **Note** - it looks like 802-1x.system-certs gets completely dropped
  too.

  5. Validate the incorrect netplan settings file in /etc/netplan, and
  broken keyfile in /run/NetworkManager/system-connections.

  network-manager snap version: 1.36.6-8 r873 22/stable

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