Re: End-user troubleshooting of bad c-ares interaction with router

Are you using gRPC installed via homebrew or is it bundled with something else?  Usually package maintainers like homebrew will dynamically link to the system versions of dependencies so they can be updated independently.  You might be able to run otool -L on grpc to see what c-ares library

Re: End-user troubleshooting of bad c-ares interaction with router

Here’s the output of adig and ahost , both with and without the DNS servers set directly on the network interface (vs. just on the router). I also learned that gRPC 1.60.0 may be using c-ares 1.19.1