Get an ifi Power adapter for any networking gear you are concerned might be putting noise into your AC line. No kludging necessary
I would only worry about this if your network gear is physically or electrically near your audio gear though. My front-end modem and router are excessively protected against surges and have a UPS to keep my networking running even when the power is out, but I reserve the ifi adapters for anything actually in my HT rack, which has about 40' of Ethernet between them.