Internet keeps disconnecting daily from ~1pm to 6-7pm EST for the past month
For the past month and a half, our internet service (Fiber 1Gb) keeps disconnecting regularly (anywhere between 2-14 times a day) between the times of 1pm and ~ 6-7 pm EST. (the rest of the time is solid as a rock). Modem is 5268AC, off the floor, connected directly to the wall, no routers/no changes to the standard modem config (although tried with and without IPv6 enabled). Going through the modem logs, it always looks the same way everytime it disconnects (see example below); always starts with that tw_ulib_device_setup_dsl:
|info||Aug 6 16:06:57|
daemon: lmd: ipnet_down ****SETTING 10 Second Delay before bringing the interface down
|info||Aug 6 16:06:49|
daemon: lmd: tw_ulib_device_setup_dsl
Sometimes it drops for 30s - 1 min before dropping off for ~2-5 minutes in what seems the modem is resetting itself. Those times the logs show quite a few errors (a few posted below):
daemon: httpd: OpenSSL error:140760FC : SSL routines : SSL23_GET_CLIENT_HELLO:unknown protocol
daemon: dlnamgr: Failed to open upnp config file (/etc/miniupnpd/miniupnpd.conf) for writing
Have had 3 techs stopped by, 2 modems, 2 ONTs, 1 full redo of all terminals. Apparently light signals come through strong, but so far no answer to the problem. Does anyone have any suggestions or can look into this from the AT&T side? AT&T technicians have assured us it is not our home network, so it's either the modem (which would be strange dropping always in the same time period) or something else AT&T software/hardware related. Tech services can only run us through the script, reset the router, send a new technician, which doesn't seem to be helping.
Anyone has any thoughts/suggestions/way forward?