L&LD
Part of the Furniture
So I updated from 384.10 to 384.10_2 on my AC88U and within an hour my Sony TV lost its network connection shortly after using the check connection tool after which it complained my router wasn’t responding when I checked the network again. This was the same problem I had with 384.9.
I noticed something odd, which was the IP address reported by both the router and the TV (before it lost it) switched from x.x.x.22 to x.x.x.23. This was after the router was updated. For a brief while it was using both .22 and .23 before switching to .23.
I powered off the router and rebooted the TV. When everything came back up the TV and router both reported the DHCP assigned address was again x.x.x.22.
My guess as to what happened was that the router decided to change the address to x.x.x.23 for some reason (have no idea why since no other devices were using that) and even though the TV used it for a bit, it wasn’t happy with that.
I’m hoping rebooting everything resolved this since everything was working fine on 384.10 for a week. Under 384.9 the problem showed up within 24 hours.
Something apparently changed though between 384.8 and 384.9 with respect to ip assignment since there was no reason for the router to change the IP address of the TV, though the TV shouldn’t have freaked out because of that.
A reboot after about 10 minutes (assuming the CPU's are idling at that time, otherwise, continue to wait) of upgrading firmware to ensure that all services come up properly and then followed by another at least an hour afterward is not optional for me. After these two successful reboots, the network will be as stable as I can be (assuming no other bugs/glitches show up).
A full network and client equipment shutdown and proper/ordered powering up is what I perform for customers. I don't want to be called back because of a DHCP lease gone wack.
It is much easier to do this than to test every possible interaction between all clients and all workloads. Even if it seems I want to enjoy another coffee while we let the network 'cool off'.