Do the needful 

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).

Do the needful by Wonky Willy January 30, 2018

do the needful 

Masturbating

Let me keep this ticket open until I do the needful

do the needful by needful doer May 5, 2018

Do the needful 

Simply means to do what you know needs to be done.

your drivers license has expired. Do the needful by going to get it renewed.

Do the needful by PaulH99 June 6, 2017