[clue] Wireshark

[Bruce Ediger]

On Tue, 15 Mar 2016, David L. Anselmi wrote:

> Or, as Charles suggested, adding Wireshark to the network caused the switch
> configuration to change, unscrewing whatever was screwed up in it.

I'm unusually unlucky when it comes to cabling, so maybe that's coloring
my views, but perhaps the act of physically plugging a laptop into the
switch re-seated a jumper, or moved a broken wire in a cable back into
contact or something.