[tlug] NTT Hikari Fiber - Does it "Just Work" with Linux (Kubuntu)?

["Lyle H Saxon" <llletters@example.com>]

I just got off the phone with a friend I've helped with computer
issues for years (from buying used equipment to setting up various
things).  He lives in a building that has just recently been wired
with glass and an NTT salesperson tried to talk him into dumping his
current ADSL and going with Hikari Fiber.  My friend asked the NTT man
if it would work okay with Linux and the guy had never heard of
Linux.....

I'm assuming that Kubuntu will "just work" by plugging into it, but
I'm not sure.  Has anyone made the switch to glass from copper?  Were
there any problems in doing so?  Can you just unplug a router and
switching hub from an ADSL box (Yahoo) and plug it into the Hikari
Fiber box and go happily surfing away?  I told by friend that I
imagined he's be okay switching, but the NTT guy insisted that some
sort of set-up was necessary.

Lyle