[SOLVED] Guest OS VLAN not working - Unifi Networking

M

mchipser

New Member
May 12, 2025
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I am attempting to get VLANs working for client a Guest OS, but I must be missing something..

VLAN is setup and working in Unifi for other devices
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Unifi network shows the port allows all tagged traffic
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The vmbr0 interface shows "VLAN aware" (I rebooted after enabling this, since I read in another post this is needed)
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I set the VLAN Tag in the guest OS config
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Guest OS is set up for DHCP, but not retrieving an IP.. I have also attempted setting a static, but was unable to ping the IP
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Any advice on where to look?
 
I have been going through all the steps to see if I am missing something, and I noticed Unifi sees the VM on the right VLAN, but does not issue an IP. I tried disabling the PVE firewall with no luck. When setting a static IP in the VM Unifi also sees this, but I am unable to ping the IP assigned. It seems like something is getting stuck in the communication in the IP negotiation. VLAN 10 is my IoT network, so the VLAN tag is being seen in Unifi and the two systems below are being assigned to the appropriate VLAN, just not sure why traffic is not passing properly.

Here is Unifi seeing two VMs, One with a Static assigned, the other DHCP assigned..
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Here are those VMs showing the same MAC / IP configs
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This is showing the inability to ping the VM with the assigned IP (192.168.111.5)
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