K 10
svn:author
V 2
bz
K 8
svn:date
V 27
2010-12-31T21:47:11.560633Z
K 7
svn:log
V 278
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

END