Comcast IPv6 Trials

Tim Durack tdurack at
Thu Jan 28 21:48:54 UTC 2010

On Thu, Jan 28, 2010 at 4:42 PM, Chris Gotstein <chris at> wrote:
> Typically the CPE address is private, not sure why they would use a
> public IP.  The MTA (VoIP) part of the modem would need a public IP if
> it was talking to a SIP server that was not on the same network.  Most
> smaller cable system outsource their VoIP to a reseller with a softswitch.

It's not necessarily "public", just globally unique. Some companies
have more than 17,891,328 devices they want to manage in a centralized


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