Re: comcast dhcp leases
On 08/25/2009 07:28 PM, Chris wrote: I just checked mine, and according to my router, the lease time is 4 days. maybe it's only certain areas. I checked mine last night (Comcast in Billerica MA) and it had a remaining lease time of 2 days, 22 hours. -Mark ___ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss/
comcast dhcp leases
Hi all - I notice that comcast has dropped its dhcp lease times down to about 15 minutes, it used to be a number of hours, which is rather longer. I wonder if its possible to somehow have the dhcp requests ask for a longer lease period? Anyone know, how If its possible? Jeff -- Some of this text was created using speech recognition software. Some errors may be present in the transcription. A: Yes. Q: Are you sure? A: Because it reverses the logical flow of conversation. Q: Why is top posting frowned upon? ___ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss/
Re: comcast dhcp leases
On 08/25/2009 09:23 AM, jk...@kinz.org wrote: Hi all - I notice that comcast has dropped its dhcp lease times down to about 15 minutes, it used to be a number of hours, which is rather longer. I wonder if its possible to somehow have the dhcp requests ask for a longer lease period? Anyone know, how If its possible? I don't think you can change the lease time on the client side. They may be getting ready to give you a new IP address or otherwise change your networking configuration. If that's the case, a 15 minute lease time is advantageous. -Mark ___ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss/
Re: comcast dhcp leases
On Tue, 2009-08-25 at 09:29 -0400, Mark Komarinski wrote: On 08/25/2009 09:23 AM, jk...@kinz.org wrote: Hi all - I notice that comcast has dropped its dhcp lease times down to about 15 minutes, it used to be a number of hours, which is rather longer. I wonder if its possible to somehow have the dhcp requests ask for a longer lease period? Anyone know, how If its possible? I don't think you can change the lease time on the client side. I assume that you could change it if you could get at the configuration. (somewhat changing the topic) This weekend I got burned by comcast suppressing DNS lookup errors. Names that started with www (e.g. www.jjexample.com) that should have generated not found errors instead returned the IP address of search2.comcast.com. I was setting up a monitor for a new domain service and couldn't understand why the monitor was finding a service even before the service was running. comcast thinks that all name service requests for www. names originate from people running browsers. I finally got an email this morning that my opt out has been processed. I filed a grumble with the FCC, but don't know if that will have any impact. Perhaps comcast is rolling out this DNS service to more of its network and shortening the leases to allow rapid changes to the name servers that get specified with the leases. They may be getting ready to give you a new IP address or otherwise change your networking configuration. If that's the case, a 15 minute lease time is advantageous. -Mark ___ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss/ -- Lloyd Kvam Venix Corp DLSLUG/GNHLUG library http://dlslug.org/library.html http://www.librarything.com/catalog/dlslug http://www.librarything.com/rsshtml/recent/dlslug http://www.librarything.com/rss/recent/dlslug ___ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss/
Re: comcast dhcp leases
On 08/25/2009 09:23 AM, jk...@kinz.org wrote: Hi all - I notice that comcast has dropped its dhcp lease times down to about 15 minutes, it used to be a number of hours, which is rather longer. I wonder if its possible to somehow have the dhcp requests ask for a longer lease period? Anyone know, how If its possible? You can request a longer lease time, but not compel it. That is up to Comcast's DHCP server configuration. If you use dhclient, it is the dhcp-lease-time option, which is sent as part of the send request if I recollect. I've never used it. I just checked my last few Comcast leases have been about 220,000 seconds each (60 hours). I've had the same IP number for a couple of years. ___ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss/
Re: comcast dhcp leases
On Tue, Aug 25, 2009 at 9:55 AM, Lloyd Kvampyt...@venix.com wrote: On Tue, 2009-08-25 at 09:29 -0400, Mark Komarinski wrote: On 08/25/2009 09:23 AM, jk...@kinz.org wrote: Hi all - I notice that comcast has dropped its dhcp lease times down to about 15 minutes, it used to be a number of hours, which is rather longer. I wonder if its possible to somehow have the dhcp requests ask for a longer lease period? Anyone know, how If its possible? I don't think you can change the lease time on the client side. I assume that you could change it if you could get at the configuration. (somewhat changing the topic) This weekend I got burned by comcast suppressing DNS lookup errors. Names that started with www (e.g. www.jjexample.com) that should have generated not found errors instead returned the IP address of search2.comcast.com. I was setting up a monitor for a new domain service and couldn't understand why the monitor was finding a service even before the service was running. comcast thinks that all name service requests for www. names originate from people running browsers. I finally got an email this morning that my opt out has been processed. I filed a grumble with the FCC, but don't know if that will have any impact. I recall an email from comcast about this new feature and that you can opt. out of the search page and receive the default 'not found' error. -pete Perhaps comcast is rolling out this DNS service to more of its network and shortening the leases to allow rapid changes to the name servers that get specified with the leases. They may be getting ready to give you a new IP address or otherwise change your networking configuration. If that's the case, a 15 minute lease time is advantageous. -Mark ___ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss/ -- Lloyd Kvam Venix Corp DLSLUG/GNHLUG library http://dlslug.org/library.html http://www.librarything.com/catalog/dlslug http://www.librarything.com/rsshtml/recent/dlslug http://www.librarything.com/rss/recent/dlslug ___ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss/ ___ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss/
Re: comcast dhcp leases
On 08/25/2009 09:29 AM, Mark Komarinski wrote: They may be getting ready to give you a new IP address or otherwise change your networking configuration. If that's the case, a 15 minute lease time is advantageous. I agree, that seems likely. One note, my parents on Verizon DSL in NJ were actually getting 15 minute DHCP leases and a new IP each 15 minutes. Apparently when the video phone that shows the grandkids stops working, *that*'s what it takes to switch ISP's. -Bill -- Bill McGonigle, Owner BFC Computing, LLC http://bfccomputing.com/ Telephone: +1.603.448.4440 Email, IM, VOIP: b...@bfccomputing.com VCard: http://bfccomputing.com/vcard/bill.vcf Social networks: bill_mcgonigle/bill.mcgonigle ___ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss/
Re: comcast dhcp leases
On 08/25/2009 09:55 AM, Lloyd Kvam wrote:
This weekend I got burned by comcast suppressing DNS lookup errors.
I really like my Comcast business connection but I'm using OpenDNS (with
their 'helpful' bits turned off) over it.
In the BIND options block:
forwarders {
208.67.222.222;
208.67.220.220;
};
Setup a web account mapped to your IP block first.
-Bill
--
Bill McGonigle, Owner
BFC Computing, LLC
http://bfccomputing.com/
Telephone: +1.603.448.4440
Email, IM, VOIP: b...@bfccomputing.com
VCard: http://bfccomputing.com/vcard/bill.vcf
Social networks: bill_mcgonigle/bill.mcgonigle
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