For now I have moved back to 5.19.0-50 and the network is back again rock solid without any problems after a few days of usage. While on 6.2.0-26 I could get no more than a day without having to reboot, sometimes multiple times a day. I'd recommend everyone doing the same until this issue is resolved, hopefully in some future kernel update.
Issue appears to be with kernel 6.2 and the older Realtek chip set. My system has the following (taken from sudo lshw -c network) ...
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
For now I have moved back to 5.19.0-50 and the network is back again rock solid without any problems after a few days of usage. While on 6.2.0-26 I could get no more than a day without having to reboot, sometimes multiple times a day. I'd recommend everyone doing the same until this issue is resolved, hopefully in some future kernel update.