[Bug 1735821] [NEW] netplan needs bridge port-priority support

[Ryan Harper]

Public bug reported:

Now that systemd supports port-priority for bridges (LP: #1668347)
netplan should handle port-priority like it does path-cost.

1) % lsb_release -rd
Description:	Ubuntu 16.04.3 LTS
Release:	16.04

1) # lsb_release -rd
Description:	Ubuntu Bionic Beaver (development branch)
Release:	18.04

2) # apt-cache policy nplan
nplan:
  Installed: 0.30
  Candidate: 0.32
  Version table:
     0.32 500
        500 http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages
 *** 0.30 100
        100 /var/lib/dpkg/status

3) netplan generate renders a networkd .network file which has [Bridge]
section including  Priority  value set on each of the bridge ports
specified

4) netplan fails to parse the input yaml with

Sample config that should parse:

% cat br-pp.yaml
network:
    version: 2
    ethernets:
        eth0:
            match:
                macaddress: '52:54:00:12:34:04'
    bridges:
        br0:
            addresses:
            - 192.168.14.2/24
            interfaces:
            - eth0
            parameters:
                path-cost:
                    eth0: 50
                priority: 22
                port-priority:
                    eth0: 14

% netplan generate
Error in network definition br-pp.yaml line 13 column 16: unknown key port-priority                    


If fixed, then I would expect a /run/systemd/network/10-netplan-eth0.network that looks like
[Match]
MACAddress=52:54:00:12:34:00
Name=eth0

[Network]
Bridge=br0
LinkLocalAddressing=no
IPv6AcceptRA=no

[Bridge]
Cost=50
Priority=14

** Affects: nplan (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1735821

Title:
  netplan needs bridge port-priority support

Status in nplan package in Ubuntu:
  New

Bug description:
  Now that systemd supports port-priority for bridges (LP: #1668347)
  netplan should handle port-priority like it does path-cost.

  1) % lsb_release -rd
  Description:	Ubuntu 16.04.3 LTS
  Release:	16.04

  1) # lsb_release -rd
  Description:	Ubuntu Bionic Beaver (development branch)
  Release:	18.04

  2) # apt-cache policy nplan
  nplan:
    Installed: 0.30
    Candidate: 0.32
    Version table:
       0.32 500
          500 http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages
   *** 0.30 100
          100 /var/lib/dpkg/status

  3) netplan generate renders a networkd .network file which has
  [Bridge] section including  Priority  value set on each of the bridge
  ports specified

  4) netplan fails to parse the input yaml with

  Sample config that should parse:

  % cat br-pp.yaml
  network:
      version: 2
      ethernets:
          eth0:
              match:
                  macaddress: '52:54:00:12:34:04'
      bridges:
          br0:
              addresses:
              - 192.168.14.2/24
              interfaces:
              - eth0
              parameters:
                  path-cost:
                      eth0: 50
                  priority: 22
                  port-priority:
                      eth0: 14

  % netplan generate
  Error in network definition br-pp.yaml line 13 column 16: unknown key port-priority                    

  
  If fixed, then I would expect a /run/systemd/network/10-netplan-eth0.network that looks like
  [Match]
  MACAddress=52:54:00:12:34:00
  Name=eth0

  [Network]
  Bridge=br0
  LinkLocalAddressing=no
  IPv6AcceptRA=no

  [Bridge]
  Cost=50
  Priority=14

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