

He may want to say “fastsync” (whose kernel part called winesync). It’s the predecessor of NTsync and was renamed to NTsync when merged into linux mainline.
Before NTsync was merged, those distrobutions provides the kernel packages with winesync patches. Since linux 6.12, NTsync was merged so they droped winesync from kernel package. But NTsync’s API is different with fastsync/winesync, so old wine with fastsync support will stop working with new kernel. (While NTsync still isn’t merged to wine)






Docker will set the default behavior of FORWARD chain to DROP, and then this make the home network of my friend off from the internet completely…
https://docs.docker.com/engine/network/packet-filtering-firewalls/#docker-on-a-router