After Major ISP outage (RoadRunner/TimeWarner) GV won't connect

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Arghtastic:
My ISP had a major outage starting at 1:20am on the 22nd of June and running the rest of the day (service came back at 1pm but continued to go in and out intermittently.) 

I see the below message in the device configuration in the Obitalk portal for my device.  When I do a traceroute to the IP address below when at home, it exceeds 30 hops before it reaches it and the traceroute stops. It appears to a misrouted destination.  I am wondering if this is on purpose by the ISP to break GV+Obi  or just means they don't have everything fixed.

   Connecting to 125.225.85.209

Has anyone else seen this.

Stewart:
A DNS cache is poisoned somewhere -- that's a hacker in Taiwan.
http://whois.domaintools.com/125.225.85.209

Reboot modem, router and OBi (in that order).  If that doesn't help, the trouble is likely at your ISP; try setting the OBi's Network Settings -> DNSServer1 and DNSServer2 to 8.8.8.8 and 4.2.2.2 respectively.

infin8loop:

I've had good luck with http://www.opendns.com/     DNS servers:  208.67.222.222 and 208.67.220.220 on my router.

Registration is not required but allows additional free and paid (if needed) features to be used.

Stewart:
Quote from: infin8loop on June 23, 2012, 10:45:24 am


I've had good luck with http://www.opendns.com/     DNS servers:  208.67.222.222 and 208.67.220.220 on my router.

Registration is not required but allows additional free and paid (if needed) features to be used.


Unless you have a paid OpenDNS account, or have a specific reason and understand the consequences, I recommend that you avoid OpenDNS for VoIP or other embedded systems.  On a free or unregistered OpenDNS account, a failing lookup (caused by a typo or a technical problem) is redirected to an ad server.  Said ad server won't respond at all to NTP or SIP, and will give a "successful" (but garbage) result on e.g. fetching a provisioning file by HTTP.  This makes finding the real cause of a problem much more difficult.

For example, if I accidentally enter "callcntric.com" into my config, the SPx Service Status will show:

Retrying Register (server=67.215.65.132:5060)

Most users won't think to look up 67.215.65.132 and see that it's actually hit-nxdomain.opendns.com.

pc44:
Good explanation.  I've always tried to specifically avoid using OpenDNS on my OBIs, after reading OBI's Google Voice FAQ.  It's nice to now see the reason why.

Apart from VOIP, I am a big fan of OpenDNS and employ it in various scenarios.  Google's Public DNS (8.8.8.8 and 8.8.4.4) as well as the ancient 4.2.2.2 Public DNS are good alternatives, and I use these for the OBIs.  But I still prefer OpenDNS in other non-VoIP setups.

Thank you both for the info,
pc44

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