'looking up xxxx' forever
in [Debian]
|
From: Stephen Powell on 5 Apr 2010 14:20 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. -- .''`. Stephen Powell <zlinuxman(a)wowway.com> : :' : `. `'` `- -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/166979413.1212691270491191134.JavaMail.root(a)md01.wow.synacor.com
From: Hugo Vanwoerkom on 5 Apr 2010 14:50 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. and: 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 Hugo -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/hpdaun$nnl$1(a)dough.gmane.org
From: Stephen Powell on 5 Apr 2010 17:10 On Mon, 5 Apr 2010 15:33:20 -0400 (EDT), Hugo Vanwoerkom wrote: > Stephen Powell wrote: >> You might want to try a Linux sniffer and see what you can come up >> with. I've heard about a product called wireshark, but I've never >> used it. You can also ask your ISP how long the lease is for the >> IP address. First level support might not know what you're talking >> about. And if you do get someone who knows what you are asking, >> he might not know the answer. And if he does know the answer, >> he might lie to you. But you can ask. And you can install a >> sniffer and figure out how to use it. Even if you decide not to >> tell the ISP what you know, at least you will have the personal >> satisfaction of knowing what their lease time *really* is. >> And if the lease time turns out to be long, you will have >> eliminated a possibility. > > Wireshark is a package on Debian Sid that I am running on. Yes, it has been packaged for Debian, and is available in the Debian archive. It is free software. -- .''`. Stephen Powell <zlinuxman(a)wowway.com> : :' : `. `'` `- -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/1513659658.1253761270501324742.JavaMail.root(a)md01.wow.synacor.com
From: Hugo Vanwoerkom on 6 Apr 2010 14:30 Stephen Powell wrote: > On Mon, 5 Apr 2010 15:33:20 -0400 (EDT), Hugo Vanwoerkom wrote: >> Stephen Powell wrote: >>> You might want to try a Linux sniffer and see what you can come up >>> with. I've heard about a product called wireshark, but I've never >>> used it. You can also ask your ISP how long the lease is for the >>> IP address. First level support might not know what you're talking >>> about. And if you do get someone who knows what you are asking, >>> he might not know the answer. And if he does know the answer, >>> he might lie to you. But you can ask. And you can install a >>> sniffer and figure out how to use it. Even if you decide not to >>> tell the ISP what you know, at least you will have the personal >>> satisfaction of knowing what their lease time *really* is. >>> And if the lease time turns out to be long, you will have >>> eliminated a possibility. >> Wireshark is a package on Debian Sid that I am running on. > > Yes, it has been packaged for Debian, and is available in the > Debian archive. It is free software. > But what would I be looking for? BTW today: Tue Apr 6 10:26:16 2010 id= ppp0. and it's now 13:18 = almost 3 hours without a hitch, at chat: Apr 06 10:26:06 CONNECT 50666/ARQ/V92/LAPM/V42BIS as fast as possible. Hugo -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/hpfu0t$6v1$1(a)dough.gmane.org
From: Stephen Powell on 6 Apr 2010 16:30
On Tue, 6 Apr 2010 14:20:11 -0400 (EDT), Hugo Vanwoerkom wrote: > > But what would I be looking for? You would be looking for DHCP-related packets that would identify the length of the DHCP lease. I've never used wireshark; I only know conceptually the kinds of things it can do; so if you need specific help in this area, someone else will have to help you. -- .''`. Stephen Powell <zlinuxman(a)wowway.com> : :' : `. `'` `- -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/469330299.1479561270585701056.JavaMail.root(a)md01.wow.synacor.com |