Good Afternoon,
If there is a Comcast DNS Engineer on the list could you contact me off-list? We are experiencing an odd issue with 75.75.75.75.
Thanks,
Aaron
[Description: Description: Description: logo-email]
Aaron Childs, CCNA
Associate Director, Networking
Information Technology
www.westfield.ma.edu/it<http://www.westfield.ma.edu/it>
Please Note: new e-mail address - aaron@westfield.ma.edu<mailto:aaron@westfield.ma.edu>
Is your issue that it gives out old DNS records? Because I am trying to
track something down for an user on Comcast who is still getting the old IP
of a VPN concentrator. The DNS records has a TTL of 30 minutes, yet a week
later the end user is still getting the old IP. Haven't been able to get
him to query 75.75.75.75 and 75.75.75.76 directly to see if he gets the IP
from there.
You can check all our caches @
http://dns.comcast.net/index.php/tools/cachecheck
Hi Ulf,
Our issue was that 75.75.75.75 was not responding to queries at all and for some reason clients weren't getting redirected to 75.75.76.76. For us all is well now, my email was stuck in Nanog Approval land for a couple of days so I couldn't give an update to the list until today.
Have a good day,
Aaron
[Description: Description: Description: logo-email]
Aaron Childs, CCNA
Associate Director, Networking
Information Technology
www.westfield.ma.edu/it<http://www.westfield.ma.edu/it>
Please Note: new e-mail address - aaron@westfield.ma.edu<mailto:aaron@westfield.ma.edu>
did the clients not have 75.75.76.76 in their resolv.conf (or
equivalent) as the second nameserver entry? that 'redirect' is the
host-os knowing it has more than one 'nameserver' to ask questions of,
right? so without the config... you are SOL.
Yes clients had both IPs in their relative DNS configuration settings.
Aaron Childs, CCNA
Associate Director, Networking
Information Technology
www.westfield.ma.edu/it
Please Note: new e-mail address - aaron@westfield.ma.edu