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| author | Chad Smith <chad.smith@canonical.com> | 2018-06-12 09:23:08 -0600 |
|---|---|---|
| committer | Chad Smith <chad.smith@canonical.com> | 2018-06-12 09:23:08 -0600 |
| commit | c3f1ad9abd4a28c1b4c1f34db28ac72a646cdca6 (patch) | |
| tree | 556acefac4e3726b28fb3859a8799926a3352403 /cloudinit/net/sysconfig.py | |
| parent | fc23ccc91307c81dd8e428465eb56efbd539267e (diff) | |
| download | vyos-cloud-init-c3f1ad9abd4a28c1b4c1f34db28ac72a646cdca6.tar.gz vyos-cloud-init-c3f1ad9abd4a28c1b4c1f34db28ac72a646cdca6.zip | |
netplan: fix mtu if provided by network config for all rendered types
When network configuration for any interface defines maximum transmission
values (MTU) the netplan, eni and sysconfig renders will take into account
any device-level, or subnet-level mtu values.
When network configuration has conflicting device-level and ipv4 subnet
mtu values, the subnet-specific value is honored and a warning will be
logged about any ignored device-level setting.
LP: #1774666
Diffstat (limited to 'cloudinit/net/sysconfig.py')
| -rw-r--r-- | cloudinit/net/sysconfig.py | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/cloudinit/net/sysconfig.py b/cloudinit/net/sysconfig.py index e53b9f1b..3d719238 100644 --- a/cloudinit/net/sysconfig.py +++ b/cloudinit/net/sysconfig.py @@ -304,6 +304,13 @@ class Renderer(renderer.Renderer): mtu_key = 'IPV6_MTU' iface_cfg['IPV6INIT'] = True if 'mtu' in subnet: + mtu_mismatch = bool(mtu_key in iface_cfg and + subnet['mtu'] != iface_cfg[mtu_key]) + if mtu_mismatch: + LOG.warning( + 'Network config: ignoring %s device-level mtu:%s' + ' because ipv4 subnet-level mtu:%s provided.', + iface_cfg.name, iface_cfg[mtu_key], subnet['mtu']) iface_cfg[mtu_key] = subnet['mtu'] elif subnet_type == 'manual': # If the subnet has an MTU setting, then ONBOOT=True |