This exact issue is also occurring with the 2925 on firmware v3.7.4.1. When I roll back to v3.7.3.2 the wireless dropout arp issues instantly goes away.

Is there a beta firmware for 2925 ?

I don't mean to hijack the thread, but I've already started a thread on a similar issue but with the AP900 (disconnects every 3 minutes) - could it be the same problem?

EDIT: Reading diarens post, I also have a 2860 router (not WiFi). I've set its ARP cache to 10 minutes and so far at least, I've been connected to the AP900 for almost an hour with zero drops!

I have just update the firmware with the Beta as well on a test unit - will come back if the WiFi Drops out

So far so good...

Incidentally all the NAT rules got clobbered with the beta fw, not much of an issue to put back, but I thought worth mentioning.

njw wrote: I don't mean to hijack the thread, but I've already started a thread on a similar issue but with the AP900 (disconnects every 3 minutes) - could it be the same problem?

EDIT: Reading diarens post, I also have a 2860 router (not WiFi). I've set its ARP cache to 10 minutes and so far at least, I've been connected to the AP900 for almost an hour with zero drops!

I've set the ARP fix on my 2925. I haven't had any wireless drops for 24hrs (it used to drop every 2 to 3 min). It looks like Draytek are using the same code in firmware on many models (which is normal). Hopefully new firmware for these models is released to fix the issue.