'looking up xxxx' forever
in [Debian]
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From: Hugo Vanwoerkom on 3 Apr 2010 14:10 Hi, I have a dialup modem. Pppconfig configured the connection with 'nameservers dynamic'. /etc/ppp/resolv.conf always contains: nameserver 148.240.118.40 nameserver 189.209.208.181 although the timestamp on the file changes with each connection: -rw-r--r-- 1 root root 53 2010-04-03 11:00 resolv.conf Now the problem: Several times a day internet communication stops and all that appears on the status bar of iceweasel is 'Looking up xxxx' where xxxx is the site that was being displayed. This is only resolved when you take down the ppp0 interface and bring it back up, redialling the ISP. And the same nameservers appear in resolv.conf. Can anyone explain this behavior? And what to do about it? BTW it again happened at 11:00 as you can see. 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/hp803t$ri5$1(a)dough.gmane.org
From: Ron Johnson on 3 Apr 2010 14:20 On 2010-04-03 13:06, Hugo Vanwoerkom wrote: > Hi, > > I have a dialup modem. > > Pppconfig configured the connection with 'nameservers dynamic'. > > /etc/ppp/resolv.conf always contains: > > nameserver 148.240.118.40 > nameserver 189.209.208.181 > > although the timestamp on the file changes with each connection: > > -rw-r--r-- 1 root root 53 2010-04-03 11:00 resolv.conf Probably because each time you dial in, dhcp gets a pot-load of config data from your ISP and must put it somewhere. Since your ISP's DNS servers never change, they keep sending the same nameserver IP addresses to your machine. > Now the problem: > [snip] > > Can anyone explain this behavior? And what to do about it? > Dodgy upstrem modems? Overheating causing *your* modem to flake out? Dodgy copper somewhere between your PC and the ISP which is nevertheless good enough for voice? -- "History does not long entrust the care of freedom to the weak or the timid." Dwight Eisenhower -- 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/4BB78679.5050808(a)cox.net
From: Wayne on 3 Apr 2010 15:10 Hugo Vanwoerkom wrote: > Hi, > > I have a dialup modem. > > Pppconfig configured the connection with 'nameservers dynamic'. > > /etc/ppp/resolv.conf always contains: > > nameserver 148.240.118.40 > nameserver 189.209.208.181 Don't know. Have you contacted your ISP to see of they are correct? DNS servers are usually under the ISP's address range. They look strange to me as the first one is in Montevideo UY and the next is in Mexico. But I do not know how they do DNS in SA > although the timestamp on the file changes with each connection: > > -rw-r--r-- 1 root root 53 2010-04-03 11:00 resolv.conf > > Now the problem: > > Several times a day internet communication stops and all that appears on > the status bar of iceweasel is 'Looking up xxxx' where xxxx is the site > that was being displayed. When I was on dialup if I connected and did nothing for some period of time, the ISP would drop the connection. I set a cron job to ping a web address every 10 minutes and stopped that nonsense. If I stayed connect for more then 5 hours they would drop the connect as well. Ask your ISP what their policy is on this. > > This is only resolved when you take down the ppp0 interface and bring it > back up, redialling the ISP. Understandable if the ISP timed you out. > > And the same nameservers appear in resolv.conf. They always use the same DNS Servers, which is normal, here anyway. > Can anyone explain this behavior? And what to do about it? > Try the cron suggestion above. > Wayne -- 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/4BB7907D.7040608(a)gmail.com
From: Stephen Powell on 3 Apr 2010 15:10 On Sat, 3 Apr 2010 14:06:51 -0400 (EDT), Hugo Vanwoerkom wrote: > > I have a dialup modem. > > Pppconfig configured the connection with 'nameservers dynamic'. > > /etc/ppp/resolv.conf always contains: > > nameserver 148.240.118.40 > nameserver 189.209.208.181 > > although the timestamp on the file changes with each connection: > > -rw-r--r-- 1 root root 53 2010-04-03 11:00 resolv.conf > > Now the problem: > > Several times a day internet communication stops and all that appears on > the status bar of iceweasel is 'Looking up xxxx' where xxxx is the site > that was being displayed. > > This is only resolved when you take down the ppp0 interface and bring it > back up, redialling the ISP. > > And the same nameservers appear in resolv.conf. > > Can anyone explain this behavior? And what to do about it? > > BTW it again happened at 11:00 as you can see. I'm not surprised that the nameservers don't change. The file is rewritten with each connection, thus the changing timestamp. The nameservers' IP addresses don't change often. The real problem, of course, is the loss of connectivity. There are two possibilities. ISPs that offer dial-up connectivity have a limited number of phone lines. If customers get a busy signal when they try to dial in, the ISPs get complaints. And the ISPs don't like complaints. So they often have an automatic system where if all lines are in use and someone tries to dial in, the person who has been connected the longest gets bumped. In other words, the ISP will hang up on you to free the phone line for someone who wants to dial in. Of course, when they hang up on people, they get complaints too. But not as much as if they can't get in in the first place. Another possibility is a short DHCP lease. When the PPP connection is established, they lease you an IP address. And that IP address has a limited lifetime. When it expires, you're dead. Not much you can do about that except reconnect. ISPs don't like you to keep your PPP connection for an extended period of time. The longer their customers keep a dial-up connection, the more phone lines they need to have. And phone lines (and modems) cost money. They want you to get it, get your e-mail, and get out. They don't want you connected for a long time. And so they give you a short DHCP lease. And when it expires, you're dead. (And when you complain, they'll blame the phone company!) Look at the logs. You may be able to determine the length of your DHCP lease from there. -- .''`. 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/538527349.931671270321617759.JavaMail.root(a)md01.wow.synacor.com
From: Hugo Vanwoerkom on 3 Apr 2010 15:10
Ron Johnson wrote: > On 2010-04-03 13:06, Hugo Vanwoerkom wrote: >> Hi, >> >> I have a dialup modem. >> >> Pppconfig configured the connection with 'nameservers dynamic'. >> >> /etc/ppp/resolv.conf always contains: >> >> nameserver 148.240.118.40 >> nameserver 189.209.208.181 >> >> although the timestamp on the file changes with each connection: >> >> -rw-r--r-- 1 root root 53 2010-04-03 11:00 resolv.conf > > Probably because each time you dial in, dhcp gets a pot-load of config > data from your ISP and must put it somewhere. > > Since your ISP's DNS servers never change, they keep sending the same > nameserver IP addresses to your machine. > >> Now the problem: >> > [snip] >> >> Can anyone explain this behavior? And what to do about it? >> > > Dodgy upstrem modems? Overheating causing *your* modem to flake out? > Dodgy copper somewhere between your PC and the ISP which is nevertheless > good enough for voice? > Dodgy copper between me and the ISP? In Mexico? You mean dangling copper? Like that thing hanging down from the pole in front of the house and that banged-up box on the corner that everybody puts their left-over soda's on? -- 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/hp83oo$6ub$1(a)dough.gmane.org |