Random Restarts of NVG510 after AT&T Update To Version 9.1.0h9d61
Random restarts occur on Arris / Motorola NVG510 dsl modem.
These followed the update to 9.1.0h9d61 by AT&T.
In an effort to solve the problem I inspected the settings and noticed that ipv6, which had been disabled, was re-enabled. I also discovered many new filter options had been added to the firewall advanced settings page, many of which were enabled by default. I assume all of this was the result of the update to 9.1.0h9d61.
I have since disabled IPV6 again, and the restarts have dropped in frequency, but still occur far more frequently than they had been. Up until this most recent stint of random restarts, we enjoyed about a two-year run without noticeable interruption. If restarts occurred, they did so overnight when no one in our household was on the LAN.
The restarts we're experiencing now occur between 4 and 12 times a day, so I continue to search for a cause. The system log offers little help as the restart reasons are always the same: "DSL: Retrain Reason RDI." Not much help there.
So, I'm wondering, since the IPV6 is disabled, should I also disable the "Reflexive ACL" filter in the firewall advanced settings? Based on the glossary text provided on that page by AT&T, the Reflexive ACL is for use by IPV6, which made me wonder whether it's now creating it's own new, problematic errors now that IPV6 is disabled.
Some forum contributors in the past have suggested disabling "Reflexive ACL" and IPV6 at the same time, but those posts were years old and I want this to be a more informed choice, which is why I am posting this here.
I can't be the only person who has experienced a dramatic spike in random modem restarts since mid June 2018. And, again, it seems those restarts also coincided with the update of my NVG510 to version 9.1.0h9d61 by AT&T. Also as apart of this update, I notice that all references to the NVG510 as a "Motorola" product have been changed to "Arris" on the settings and status pages for the DSL modem.
If anyone knows of any problematic default settings that might need to be adjusted following the update to 9.1.0h9d6, please share them here. Thank You.