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[Ryan Harper <1721157@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

cloud-init tip fails to render a netplan bridge configuration with a stp
value.

% cat network_configs/bridge-simple.yaml 
showtrace: true
network:
    version: 1
    config:
        # Physical interfaces.
        - type: physical
          name: eth0
          mac_address: "52:54:00:12:34:00"
          subnets:
              - type: dhcp4
        - type: physical
          name: eth1
          mac_address: "52:54:00:12:34:02"
        # Bridge
        - type: bridge
          name: br0
          bridge_interfaces:
            - eth1
          params:
              bridge_fd: 150
              bridge_stp: 'off'


Currently renders a netplan config of:

network:
    version: 2
    ethernets:
        eth0:
            dhcp4: true
            match:
                macaddress: '52:54:00:12:34:00'
            set-name: eth0
        eth1:
            match:
                macaddress: '52:54:00:12:34:02'
            set-name: eth1
    bridges:
        br0:
            interfaces:
            - eth1
            parameters:
                forward-delay: 150


netplan in artful with bridge stp support enables STP by default (unless disabled)
This prevents setting some values of forward-delay.  In any case, we should translate
the bridge_stp value to the netplan boolean.

** Affects: cloud-init
     Importance: Undecided
         Status: New


** Tags: curtin

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Engineering Team, which is subscribed to cloud-init.
https://bugs.launchpad.net/bugs/1721157

Title:
  netplan render drops bridge_stp setting

Status in cloud-init:
  New

Bug description:
  cloud-init tip fails to render a netplan bridge configuration with a
  stp value.

  % cat network_configs/bridge-simple.yaml 
  showtrace: true
  network:
      version: 1
      config:
          # Physical interfaces.
          - type: physical
            name: eth0
            mac_address: "52:54:00:12:34:00"
            subnets:
                - type: dhcp4
          - type: physical
            name: eth1
            mac_address: "52:54:00:12:34:02"
          # Bridge
          - type: bridge
            name: br0
            bridge_interfaces:
              - eth1
            params:
                bridge_fd: 150
                bridge_stp: 'off'

  
  Currently renders a netplan config of:

  network:
      version: 2
      ethernets:
          eth0:
              dhcp4: true
              match:
                  macaddress: '52:54:00:12:34:00'
              set-name: eth0
          eth1:
              match:
                  macaddress: '52:54:00:12:34:02'
              set-name: eth1
      bridges:
          br0:
              interfaces:
              - eth1
              parameters:
                  forward-delay: 150

  
  netplan in artful with bridge stp support enables STP by default (unless disabled)
  This prevents setting some values of forward-delay.  In any case, we should translate
  the bridge_stp value to the netplan boolean.

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