CGN fixed/hashed nat question

William Herrin bill at
Wed Jan 23 23:42:38 UTC 2013

On Wed, Jan 23, 2013 at 6:21 PM, Christian Kratzer <ck-lists at> wrote:
> On Wed, 23 Jan 2013, William Herrin wrote:
>> The algorithm will exclude the .0 and .255 external addresses from
>> use, mapping the respective internal IPs to the other externals.
> why would you want to do that. .0 and .255 are perfectly valid ips.

Except for the machines which will refuse to talk to them. There's no
excuse for post-classful stacks failing to work with those IPs but
some do anyway. Enough that you don't want to waste your support
staff's time dealing with the fallout.

Bill Herrin

William D. Herrin ................ herrin at  bill at
3005 Crane Dr. ...................... Web: <>
Falls Church, VA 22042-3004

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