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Article #220Re: dial-up networking: should i add dns ?
From: Chris Shenefiel
Date: Tue, 12 May 1998 00:00
Date: Tue, 12 May 1998 00:00
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2058 bytes
HOWEVER!! If you add a caching DNS server to your on-demand dialer, you may not get reliable dial startups if you are receiving dynamically assigned IP addresses from your ISP provider. This is particularly true of diald. Diald works now, for you, because each initial connection to the internet is through a UDP DNS request. UDP request survive network interface changes that occur between the dummy sl0 connection of diald and the real ppp0 connection that comes to life after you connect. However, if you install a caching named, you will no longer send the UDP requests across the network and will resolve host names locally. Therefore, you will then use interface-oriented packages that won't survive a network interface transition from the dummy interface to the real one. So, if you are receiving dynamically assigned IP addresses and you are using diald, I would recommend not setting up a caching name server. FWIW, Chris George Bonser wrote: > A cacheing-only nameserver can be a great help if you frequently revisit the > same sites. It can also speed up mail collection too since you will not have > to do a name lookup for each transaction. If you are using your Linux > box as your outbound mail server, adding a nameserver is a great help. > > -- > George Bonser > > Microsoft! Which end of the stick do you want today?
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 102983,c8cb5cde27f5dde0 X-Google-Attributes: gid102983,public X-Google-Thread: 10669a,c8cb5cde27f5dde0 X-Google-Attributes: gid10669a,public From: Chris Shenefiel <cshenefiel@att.com> Subject: Re: dial-up networking: should i add dns ? Date: 1998/05/12 Message-ID: <35586A2C.1271D76D@att.com> X-Deja-AN: 352570997 Content-Transfer-Encoding: 7bit References: <35578E00.5167@molsci.csiro.au> <Estyx2.C0M@oriole.sbay.org> To: George Bonser <grep@oriole.sbay.org> Content-Type: text/plain; charset=us-ascii Organization: AT&T Solutions Mime-Version: 1.0 Newsgroups: comp.os.linux.networking,aus.computers.linux