please reopen if this is still an issue
** Changed in: systemd (Ubuntu)
Status: Confirmed => Invalid
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https://bugs.launchpad.net/bugs/1738058
Title:
vlan usage requires an intermediate step
Status in nplan package in Ubuntu:
Confirmed
Status in systemd package in Ubuntu:
Invalid
Bug description:
If I try to apply vlans directly:
network:
version: 2
renderer: networkd
ethernets:
eth0: {}
vlans:
vlan1:
id: 1
link: eth0
addresses: [ 192.168.0.10/23 ]
vlan10:
id: 10
link: eth0
addresses: [ 10.0.0.5/24 ]
The vlan devices never come up, they are left in degraded state by
networkd. If I define an address for eth0, then eth0 and all of the
vlans will have the same address. Needless to say, this doesn't work.
If I use an intermediary device instead, such as a bond:
network:
version: 2
renderer: networkd
ethernets:
eth0: {}
bonds:
vmaster:
interfaces: [ eth0 ]
vlans:
vlan1:
id: 1
link: vmaster
addresses: [ 192.168.0.10/23 ]
vlan10:
id: 10
link: vmaster
addresses: [ 10.0.0.5/24 ]
Then the vlans are correctly applied and brought up by systemd.
I think this is either a systemd bug or a netplan bug; it's possible
we don't generate the config quite in the way that systemd expects it
(even though it looks straightforward enough).
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