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Re: 'looking up xxxx' forever

Stephen Powell wrote:
On Mon, 5 Apr 2010 13:26:14 -0400 (EDT), Hugo Vanwoerkom wrote:
Stephen Powell wrote:
This is sounding more and more like an expired DHCP lease.
You really need to investigate this, as I suggested earlier.

ISPs really don't want dial-up users to be connected very long.
They want them to get in, read their e-mail, and get out,
especially if they are paying a flat fee for unlimited access.
In the "old days" before TCP/IP, i.e. traditional async dial-up
access to an on-line service provider, such as AOL, Compuserve,
Prodigy, etc., they would just hang up on you after so long.
Now they have a sneakier way of doing it.  They give you
a short DHCP lease and no renewals.  DHCP lease time varies from
ISP to ISP.  Generally, the less you pay per month, the shorter
the DHCP lease time.  They force *you* to hang up on *them*.

But if it was an expired DHCP lease wouldn't the 'looking up' problem always happen after the same time period expired from connect?

Well, one would think so, at least approximately.  Some variation
might be expected due to ARP cache entries and how often the cache
is refreshed, but it shouldn't vary widely.  Does the length of
time between connection and the first occurrence of the problem
vary widely?  What's the shortest and longest "good connection"
time?  It could also be that different servers at the ISP are
set for different times and it depends on which server you get
when you dial in.

I keep track of everything but you got me here. I have to check. But fore example, I do dist-upgrades on this system over the dialup modem and then the system is up for 3 days. But I haven't done that in a while. I will write an app for up-down.d to record the total time connected.

But e.g. yesterday I connected at:

Sun Apr 4 08:22:50 2010 id= ppp0.
Sun Apr 4 11:37:59 2010 id= ppp0. = 3hrs 15mins
Sun Apr 4 12:29:06 2010 id= ppp0. = 53 mins.
Sun Apr 4 15:33:18 2010 id= ppp0. = 3hrs 4 mins.
Sun Apr 4 16:09:20 2010 id= ppp0. = 36 mins.

That's a pretty wide distribution.


Fri Apr 2 10:12:08 2010 id= ppp0.
Fri Apr 2 10:54:36 2010 id= ppp0. = 42 mins.
Fri Apr 2 11:41:37 2010 id= ppp0. = 47 mins.
Fri Apr 2 14:56:19 2010 id= ppp0. = 3 hrs. 15 mins.
Fri Apr 2 18:04:36 2010 id= ppp0. = 3 hrs. 8 mins.

One thing I noted between those 2 dates and today is that the connection speed is better:

chat:  Apr 02 14:56:08 CONNECT 42666/ARQ/V92/LAPM/V42BIS
chat:  Apr 02 18:04:28 CONNECT 45333/ARQ/V92/LAPM/V42BIS
chat:  Apr 04 08:22:39 CONNECT 45333/ARQ/V92/LAPM/V42BIS
chat:  Apr 04 11:37:51 CONNECT 45333/ARQ/V92/LAPM/V42BIS
chat:  Apr 04 12:28:59 CONNECT 45333/ARQ/V92/LAPM/V42BIS
chat:  Apr 04 15:33:14 CONNECT 45333/ARQ/V92/LAPM/V42BIS
chat:  Apr 04 16:09:16 CONNECT 50666/ARQ/V92/LAPM/V42BIS
chat:  Apr 05 10:10:44 CONNECT 50666/ARQ/V92/LAPM/V42BIS
chat:  Apr 05 12:10:40 CONNECT 50666/ARQ/V92/LAPM/V42BIS


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