Bjoern A. Zeeb c744cde428 Try to catch a possible divide-by-zero as early as possible if "mtu" is 0
(also test for negative MTUs if checking it anyway).
An MTU of 0 is arguably a bug elsewhere, but this at least gives us some
more debugging hints.

Sponsored by:	ISPsystem (Early 2010)
MFC after:	1 week
2010-12-31 21:47:11 +00:00
..
2010-09-02 17:43:44 +00:00
2010-11-09 10:59:09 +00:00
2010-12-21 19:30:24 +00:00