Date: Wed, 31 Mar 2010 19:39:19 +0000 (GMT) From: "Alexandre L." <axelbsd@ymail.com> To: Patrick Lamaiziere <patfbsd@davenulle.org>, Alejandro Imass <ait@p2ee.org> Cc: freebsd-questions@freebsd.org Subject: Re: u3g network problem Message-ID: <903575.94048.qm@web24818.mail.ird.yahoo.com> In-Reply-To: <v2na14066a01003310518tb8a613a7k32623eef21490a3a@mail.gmail.com>
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Hi,=0A=0AIf your DNS are changed, I think that your network card is configu= red in DHCP mode.=0ATo dissallow DNS changes (in /etc/resolv.conf) by DHCP = updates, you can add this line to /etc/dhclient.conf : =0Aprepend domain-na= me-servers <DNS_IP_adress_1>,<DNS_IP_adresse_2>,<DNS_IP_adresse_3>;=0AAfter= you must restart your network card and voil=E0.=0A=0AAlexandre.=0A=0A--- E= n date de=A0: Mer 31.3.10, Alejandro Imass <ait@p2ee.org> a =E9crit=A0:=0A= =0A> De: Alejandro Imass <ait@p2ee.org>=0A> Objet: Re: u3g network problem= =0A> =C0: "Patrick Lamaiziere" <patfbsd@davenulle.org>=0A> Cc: freebsd-ques= tions@freebsd.org=0A> Date: Mercredi 31 mars 2010, 12h18=0A> On Tue, Mar 30= , 2010 at 5:27 PM,=0A> Patrick Lamaiziere=0A> <patfbsd@davenulle.org>=0A> w= rote:=0A> > (8-STABLE/i386)=0A> >=0A> > Hi,=0A> >=0A> > I've got some troub= les with a 3G connection. I don't=0A> know which things=0A> > I should chec= k to debug this:=0A> >=0A> > I use ppp to connect and it works fine. But af= ter a=0A> while (not a long=0A> > time), I don't have any reply to DNS requ= ests, as far=0A> I can see with=0A> > wireshark...=0A> >=0A> =0A> What are = you using to dial to your 3g network? (I use=0A> wvdial, and love it)=0A> = =0A> I've seen this happen on my 3g network as well. It seems=0A> that the = ISP=0A> randomly updates the DNS to a broken one. So write down the=0A> DNS= s when=0A> it's actually working (cat /etc/resolv.conf) and make=0A> yourse= lf a=0A> little script that updates them back to the working DNSs=0A> here = is mine=0A> for example (adjust to your working DNSs):=0A> =0A> =0A> # cat = ./dnsdigitel=0A> =0A> #!/bin/sh=0A> echo "nameserver 204.59.152.208" > /etc= /resolv.conf=0A> echo "nameserver 57.73.127.195" >> /etc/resolv.conf=0A> = =0A> So when it stops resolving I just ./dnsdigitel and that's=0A> it. Of= =0A> course, this could be easily automated, etc. but it's a=0A> quick fix = to=0A> your problem. Now, the interesting this is that your ISP=0A> does ex= actly=0A> the same as my ISP, it changes the DNS randomly to=0A> non-workin= g ones,=0A> curious.=0A> =0A> Best,=0A> Alejandro Imass=0A> =0A> > Then if = I use an IP, it works. So it looks like it is=0A> a problem with=0A> > DNS.= I've tried with an other dns server with the same=0A> result. I've=0A> > a= lso tried with a local dns server to cache the=0A> requests. It looks to=0A= > > help a bit.=0A> >=0A> > Anyway I also use a ssh tunnel to connect to my= server=0A> and (on the=0A> > server) I can see a lot of CLOSED sockets wit= h=0A> netstat, and a lot of=0A> > sshd processes stuck, even after days. So= there is=0A> something wrong with=0A> > the connection.=0A> >=0A> > Any id= ea or suggestion?=0A> >=0A> > Thanks, regards.=0A> >=0A> >=0A> > __________= _____________________________________=0A> > freebsd-questions@freebsd.org= =0A> mailing list=0A> > http://lists.freebsd.org/mailman/listinfo/freebsd-q= uestions=0A> > To unsubscribe, send any mail to "freebsd-questions-unsubscr= ibe@freebsd.org"=0A> >=0A> _______________________________________________= =0A> freebsd-questions@freebsd.org=0A> mailing list=0A> http://lists.freebs= d.org/mailman/listinfo/freebsd-questions=0A> To unsubscribe, send any mail = to "freebsd-questions-unsubscribe@freebsd.org"=0A> =0A=0A=0A
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