** Description changed:
+ [Impact]
+ Users of netplan with complex bridge or bond configurations, where setting
MTU or renaming is required and matching is done by MAC address.
+
+ [Test case]
+ 1) Configure netplan with a bond, and device members that use different MTU
values:
+
+ network:
+ version: 2
+ ethernets:
+ ens6:
+ set-name: ens6
+ match:
+ macaddress: 52:54:00:25:ba:4f
+ mtu: 9000
+ ens7:
+ set-name: ens7
+ match:
+ macaddress: 52:54:00:02:86:3b
+ mtu: 9000
+ bonds:
+ bond0:
+ interfaces:
+ - ens6
+ - ens7
+ mtu: 9000
+ parameters:
+ down-delay: 0
+ lacp-rate: fast
+ mii-monitor-interval: 100
+ mode: 802.3ad
+ up-delay: 0
+ transmit-hash-policy: layer3+4
+ vlans:
+ bond0.804:
+ mtu: 1500
+ id: 804
+ link: bond0
+ addresses:
+ - 10.20.16.50/24
+ bond0.1:
+ mtu: 1500
+ id: 1
+ link: bond0
+ addresses:
+ - 10.3.67.31/20
+ gateway4: 10.3.67.1
+ nameservers:
+ addresses:
+ - 10.3.67.22
+ search:
+ - cloud
+
+ 2) Verify that the correct MTU has been applied to each interface:
+ ens6: 9000
+ ens7: 9000
+ bond0: 9000
+ bond0.804: 1500
+ bond0.1: 1500
+
+
+ [Regression potential]
+ Minimal risk of regression: this changes the generated configuation in a very
targetted way, where only when dealing with an interface added to bond or a
bridge *and* matching by MAC address is in use, the generated configuration for
networkd is further qualified by device Type to ensure it does not match on
extra devices (ie. because some may share the same MAC address). Other
configurations (such has when no matching is in use) are not affected.
+
+
+ ---
+
+
netplan version: 0.36.3
Ubuntu Bionic
"""
network:
- version: 2
- vlans:
- bond0.810:
- addresses:
- - 10.20.33.3/29
- id: 810
- link: bond0
- mtu: 1500
- nameservers: *id001
+ version: 2
+ vlans:
+ bond0.810:
+ addresses:
+ - 10.20.33.3/29
+ id: 810
+ link: bond0
+ mtu: 1500
+ nameservers: *id001
"""
Note: bond0 and its slaves have mtu=9000 configured (there are other
vlans using 9000, too).
On netplan source code deployed by the package, only "migrate.py" has
references to "MTU", however, a command does not exist for "migrate".
I also tried to add /etc/udev/rules.d/70-net.rules:
"""
SUBSYSTEM=="net", ACTION=="add", KERNEL=="bond0.810", ATTR{mtu}=="9000",
ATTR{mtu}="1500"
"""
But it doesn't get applied.
** Changed in: netplan
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1804861
Title:
MTU size defined on /etc/netplan/50-cloud-init.yaml not applied
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