** Description changed:
- In Ubuntu Core, in all supported devices ethernet devices have higher
- metric than wlan or wwan devices, so packets get routed to the latter
- always. The metric is 1024, while for instance network-manager assigns
- these numbers:
+ [Impact]
+ In Ubuntu Core, in all supported devices ethernet devices have higher metric
than wlan or wwan devices, so packets get routed to the latter always. The
metric is 1024, while for instance network-manager assigns these numbers:
ethernet -> 100
wlan -> 600
wwan -> 700
This happens because ethernet devices are managed by default by networkd
in ubuntu-core, while wlan and wwan are managed by network-manager if
installed. It would make sense to either assign a metric of 100 in
networkd configuration file or change network-manager snap so it handles
ethernet in all cases when installed.
- SRU TEST CASE:
- * Set up an ethernet and wifi connection using netplan, and check metrics in
"ip route". With the current version they have "1024", with the proposed update
the ethernet one will have 100, the wifi one 600.
+ [Test Case]
+ * Set up an ethernet and wifi connection using netplan, and check metrics in
"ip route". With the current version they have "1024", with the proposed update
the ethernet one will have 100, the wifi one 600.
- REGRESSION POTENTIAL: It could in principle happen that someone relies
- on the current high metric and this interferes with some custom routing.
- However, netplan has only been used in snappy on xenial since recently,
- and there is no other official way to configure routing on snappy than
- netplan. So in practice this should be very low.
+ [Regression Potential]
+ It could in principle happen that someone relies on the current high metric
and this interferes with some custom routing. However, netplan has only been
used in snappy on xenial since recently, and there is no other official way to
configure routing on snappy than netplan. So in practice this should be very
low.
** Also affects: nplan (Ubuntu Yakkety)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1639754
Title:
Ethernet devices have higher metric than wlan or wwan ones
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