nanog mailing list archives

Re: job screening question


From: William McCall <william.mccall () gmail com>
Date: Sun, 8 Jul 2012 14:57:34 -0500

On Sun, Jul 8, 2012 at 2:23 PM, Jimmy Hess <mysidia () gmail com> wrote:

I'm not sure which era exactly in which you consider it legal and
kosher to assign to a network,  but even if you relax all the rules
that require contiguity, it is still an illegal network mask for end
hosts, just like 255.255.255.254 is;  if an applicant doesn't flag it
out as bad/invalid subnet mask in this era,  then they might fail the
filter,


Well, the correct answer is that it IS invalid (because the real world
routers tell us so) and this should be the only acceptable answer,
but, just to be sure, /31s are valid, can be used, and are used.


-- 
William McCall


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