To ensure that we understand the consequences of these changes, I've
spent a bit of time tracking down everywhere this will affect in cloud-
init by looking up the various call chains of `get_interfaces`:
Called by:
* `_get_current_rename_info`
* `_rename_interfaces`
* `apply_network_config_names`
* `Distro.apply_network_config_names`
* `Init._apply_netcfg_names`
* `Init.apply_network_config`
* `get_ib_hwaddrs_by_interface`
* `helpers.openstack.convert_net_json`
* {`ConfigDrive`, `OpenStack`, `IBMCloud`}`.network_config`
* `get_interfaces_by_mac_on_linux`
* `get_interfaces_by_mac`
* `OpenNebulaNetwork` -- used to determine physical NICs for network config
generation
* Oracle -- a couple of ways in network config generation
* EC2 -- network config conversion (theirs to ours)
* `helpers.openstack.convert_net_json`
* `helpers.digitalocean.convert_network_configuration`
* `helpers.upcloud.convert_to_network_config_v1`
* `net.get_devicelist` (but only on FreeBSD)
* `find_fallback_nic_on_netbsd_or_openbsd`
* `find_fallback_nic_on_freebsd`
* `Networking.wait_for_physdevs`
* `Init.apply_network_config`
Most of these are related to converting a network configuration format
provided by a cloud into our own formats. None of this generation
includes handling for creating OVS config (unsurprisingly!), so those
cases should all be unaffected by changes to `get_interfaces` around OVS
(except for a very minor performance hit for any new checks). Others
are only used on *BSD, so we also don't need to worry about OVS
interfaces there.
Every other call originates from `Init.apply_network_config`: this is
the codepath that we are intending to affect, so we can see that there
shouldn't be any unexpected consequences in other parts of the codebase.
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https://bugs.launchpad.net/bugs/1912844
Title:
Bond with OVS bridging RuntimeError: duplicate mac found!
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