Ars Technica on IPv4 exhaustion

Frank Bulk frnkblk at
Mon Jun 23 02:41:54 UTC 2014

Did they ever explain why?  Did the SMC function as a router, and act as the
customer side of a stub network that allowed that /29 to hang off the
router?  If that was the case, and the Motorola D3 modem was L2-only, that
might explain the change in capability. 


-----Original Message-----
From: NANOG [mailto:nanog-bounces at] On Behalf Of Kalnozols, Andris
Sent: Sunday, June 22, 2014 9:29 PM
To: nanog at
Subject: Re: Ars Technica on IPv4 exhaustion


My experience as a Comcast Business customer with a /29 IPv4 subnet was
that swapping out the SMC modem/router for an IPV6-capable Motorola
DOCSIS 3 modem meant that I could no longer have the /29.


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