After a factory reset (skipping guest network setup entirely), the system exhibits persistent DHCP assignment failures that worsen over time. This appears to be a known firmware bug related to orphaned VLAN 591 configuration.

System Logs:

The apsd daemon repeatedly fails with:

Error: can't find ifname[eth1.591] in eth_ifname

This occurs ~every 3-5 seconds across the entire 24-hour period, despite guest network being completely disabled. The VLAN ID 591 is the standard ID for the Deco guest network feature. Simultaneously, clients fail DHCP assignment with:

client_mgmt: client(MAC) not found in arp table disconnect_counter=0
client_mgmt: client(MAC) not found in arp table disconnect_counter=1
client_mgmt: client(MAC) not found in arp table disconnect_counter=2

This pattern escalates: yesterday 2 devices failed DHCP; today 5+ devices are affected. Devices connect to WiFi successfully but never receive IP addresses.

The apsd daemon attempts to steer clients using a non-existent virtual interface (eth1.591) that was part of the guest network configuration. When steering fails, the client management system cannot properly register devices in the ARP table, causing DHCP lease assignment to fail.

This matches documented issues across Deco X50/X55 forums dating back to 2022:

• https://community.tp-link.com/en/home/forum/topic/584954
• https://community.tp-link.com/en/home/forum/topic/653010
• https://community.tp-link.com/en/home/forum/topic/609060

I've tried:

• Full factory reset (without guest network setup)
• Multiple power cycles
• Allowed the system to stabilize for 24+ hours

This is impacting home automation and IoT devices that require stable DHCP leases.