The person uttering the phrase has indicated to the listener that they have decided the
issue being discussed is not their problem. They don't care how it is solved, but
know they will not be
involved in solving it.
The network connection is failing sporadically only when going through this particular router, but I have checked it's logs and
see no errors. It is not a problem with my network, but with your
software. Do the needful and
fix this issue (and spend many, many hours gathering additional data to prove beyond any doubt it is the router).