I hesitate with this because I haven't captured it in the logs and or it may be AIMesh closed source code. But the activity is different from 386.1
Occasionally, as I move through the house I correlate Dissaoc/ReAssoc of my iPhone in the logs. But after a few minutes I lose my IPADDR. Still have good signal strength just no layer 3, no Internet, no local access. Not sure what to look for or how to test and even if I did, whether this was going to be closed source. I have the roaming assistant enabled, set to disconnect clients with an RSSI lower than -65 dBm. Tx power adjustment set to performance. No Smart connect. I can see the iPhone coming off or coming on the router or AIMesh nodes in wlceventd.log and roamast.log. Now after losing my IP, if I go back and connect back to the original location I was on, local and Internet connectivity resume. If I toggle WiFi on the phone I get it back. 2.4Ghz or 5Ghz no difference after this happens, I'm working again. Under 386.1 this happened very infrequently to the point where I thought just adjusting the threshold on the roaming assist would do the trick, and for the most part I felt it did. Under 386.1_2 this is happening much more often. What I have yet to try is if waiting long enough do I get the IPADDR back, I think I do, but need to be sure.
At this point not sure what to look for, where to look and a test scenario to capture, open to ideas...
Thinking of using the laptop, wireshark and roaming as a first step, to try to get a little more detail to correlate with the logs on the router, grab the arp table at the router, nodes and laptop and compare before, during and after. Taking suggestions.
Got this but I think that's related to AIMesh closed source;
Feb 17 18:12:58 AC5300-MBR kernel: br0: received packet on wl1.1 with own address as source address
Feb 17 18:26:09 AC5300-CP kernel: br0: received packet on wl2.1 with own address as source address
Feb 17 18:26:12 AX88U-MAIN kernel: br0: received packet on eth7 with own address as source address
Feb 17 18:54:03 AC5300-MBR kernel: br0: received packet on wl0.1 with own address as source address
Feb 17 18:54:43 AX88U-MAIN kernel: br0: received packet on eth6 with own address as source address
Feb 17 18:55:11 AC5300-MBR kernel: br0: received packet on wl0.1 with own address as source address
Feb 17 18:56:54 AX88U-MAIN kernel: br0: received packet on eth7 with own address as source address
Feb 17 18:56:58 AC5300-MBR kernel: br0: received packet on wl1.1 with own address as source address
Feb 17 18:57:12 AX88U-MAIN kernel: br0: received packet on eth7 with own address as source address
Feb 17 18:57:21 AC5300-MBR kernel: br0: received packet on wl1.1 with own address as source address
Feb 17 18:58:15 AX88U-MAIN kernel: br0: received packet on eth7 with own address as source address
Feb 17 18:58:19 AX88U-MAIN kernel: br0: received packet on eth7 with own address as source address
Feb 17 19:16:32 AC5300-CP kernel: br0: received packet on wl2.1 with own address as source address
Feb 17 19:16:33 AC5300-MBR kernel: br0: received packet on wl1.1 with own address as source address
Feb 17 19:16:53 AC5300-CP kernel: br0: received packet on wl2.1 with own address as source address
Feb 17 19:16:54 AX88U-MAIN kernel: br0: received packet on eth7 with own address as source address