I have an EasyMesh setup with:

• AX53 (main router, EasyMesh master)

• AX23 and C6 (mesh clients, default settings, wired backhaul)

• DHCP and NAT disabled on the AX53

• AX53 is connected via LAN port to a TP-Link switch (TL-SG1008P), which connects to my ISP router (Technicolor FGA2235)

DHCP is enabled only on the ISP router, and all devices have fixed IPs.

Issue:
After rebooting the AX53 (e.g., power loss), the entire network becomes unusable:

• Massive traffic flood (all switch and ISP router LEDs blink rapidly)

• Clients lose connectivity

• Problem only stops when the AX53 is powered off

• In AP mode, the problem disappears — but EasyMesh is disabled
   

Logs show the AX53 spamming ARP requests at extreme rate (6000+/minute), e.g.:

16:30:44.424126 ARP, Request who-has 192.168.1.43 tell 192.168.1.30, length 46
(repeated ~100 times per second)
 

Questions:

1. Is this configuration officially supported (AX53 in router mode, LAN-only, no DHCP/NAT)?

2. Why does rebooting the AX53 cause a broadcast storm?
    

Network diagram is attached.
Thank you!