Seen this happen quite often with Comcast.  They simply didn’t provision the 
new modem.  A simple call to them should correct it.  Done it two or 3 times in 
the past 6 months.
Justin


Justin Wilson j...@mtin.net
http://www.mtin.net
Managed Services – xISP Solutions – Data Centers
http://www.thebrotherswisp.com 
Podcast about xISP topics
http://www.midwest-ix.com
Peering – Transit – Internet Exchange 

> On Feb 9, 2015, at 11:32 AM, Justin Krejci <jkre...@usinternet.com> wrote:
> 
> Has anyone run into the situation where their static IP address from Comcast 
> (on the business class cable modem Internet service) was changed when the 
> modem was replaced?
> 
> We have a remote site that uses Comcast as a backup Internet connection and 
> when we went to use it recently our VPN tunnel would not establish. After 
> working with the Comcast support group we discovered Comcast changed our 
> static IP address. I am working through trying to figure out the when and the 
> why with Comcast still and suspect it was changed when the modem was replaced 
> back in December. The modem was replaced by Comcast as our previous modem was 
> apparently EOL'ed.
> 
> We're now setting up additional monitoring to verify the accessibility of our 
> remote site via the Comcast connection so we don't have any future uh-ohs 
> when we need to use our backup connection and it too is not fully functional.
> 
> TIA,
> -Justin
> 

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