I'd like to know, does it support IP health checks for resolution? When one of the IP address links goes down, does it automatically switch to another default line?

Currently it is not supported, mainly because there are not enough monitoring points in "domestic" mainland China, and there are concerns about misjudgments in line-splitting scenarios.
In the next few days, we will try to add a detection feature.

Thanks for your hard work.

Now the free region-based parsing is available, and almost all the others are gone.

Thank you, expert, for coming to offer more suggestions.