Hey, I've been having the same issues with hosting my own server from my single player file.
the mods I've been using are
apegrapes
BetterRuins
CarryOn
Configlib
foodshelves
Long-term_food
millwright
primitive survival
vsimgui
what seemed to fix the issue was both updating my either net driver, and disabling the following settings through device manager.
ARP Offload - Disabled
Idle power down restriction - Disabled
Interrupt Moderation - Disabled
NS offload - Disabled
Wake on Magic Packet - Disabled
Wake on Magic packet from S5 - Disabled
Wake on Pattern Match -- Disabled
I am by far no expert on what those settings do, but now I can play without having to restart my computer after my ether net completely shuts down.