VLAN interface missing after OS upgrade
Operating system updates can break system settings network panels entirely, preventing you from getting into networking. Additionally, configured VLAN interfaces like ens1.99 may disappear completely and no longer show up via ip addr or ip link.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
- 1Manually flushing the parent interface config and restarting the networking service
- 2Removing the auto line for the vlan, removing the vlan_raw_device, and changing to a bridge config
In their words
Unedited, most upvoted first, each linked to the thread it came from.
“During some testing it was noticed that the VLAN interface, ens1.99, was no longer shown via ip addr or ip link .”source ↗
Chris Woelkers · Server Fault · 7 upvotes
“we have two machines so far that now have broken system settings network panels. You can't get into networking.”source ↗
perriwinkle_ · r/msp · 3 upvotes
Where this came up
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