Bugs in Create Cluster UI for IPv6 using LLA and for interface comments (v9.2.11)

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Aug 23, 2026
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Goal: Creating a cluster using IPv6 interfaces for Ring0 and Ring1

Problems/bugs encountered:
  1. Create Cluster UI won't allow selecting two different IPv6 interfaces using the same Link Local Address
  2. Create Cluster UI only displays the address selected, but not the interface. At least for LLA it should be e.g. "fe80::11%nic1"
  3. Create Cluster UI interface picker doesn't display comments for most interfaces, even though all have comments configured using 'Networks' UI
  4. Create Cluster UI will only offer one IPv6 address for each interface, even when they have multiple
I worked around not supporting multiple addresses per interface by using vlans with one address each.

I haven't tested if I manually configuring the LLA addresses in corosync.conf works yet e.g. "fe80::11%nic1" and "fe80::11%vmbr0"
I assume it does and this is just a UI bug?


Dialog blocked because LLA s the same, even though the two Links are different interfaces:
1788934298627.png

Interface does not display comments for interfaces, even though comment added using Network dialog (see below)
1788935375133.png


Network dialog, showing configure comments:
1788934805861.png

/etc/network/interfaces file, generated by Proxmox Networks dialog

1788936508279.png