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Special Forums IP Networking Conditional Forwarding using BIND9 Post 302245565 by neked on Friday 10th of October 2008 10:55:41 AM
Old 10-10-2008
Quote:
Originally Posted by otheus
What happens if you set all requests to 10.0.0.1 and THEN 192.168.0.1 ? Is it the problem that requests take a long time if there is no such VPN established? This can be solved by routing tables I think.
I don't want to set all requests to 10.0.0.1 because that means all my DNS queries will go to my workplace first, and that makes me kind of uncomfortable, since my workplace can and do monitor my traffic.

My problem is that I want all my DNS queries to go my ISP's DNS servers first, then to my work place's. This was possible in the past, but my ISP implemented this annoying "assistive DNS feature" that takes all unresolved DNS queries and routes them to their own search page laden with queries.. that means that as far as my computer is concerned, the DNS query is *resolved* because it was routed to the IP of the ISP's search page. What this means is that:

1- I issue a DNS query for somehost.internal.net (this is a host inside the VPN, the VPN's DNS servers should be able to resolve it, but the ISP's DNS would not be able to resolve it)
2- my query is issued first to the ISP's DNS, which is unable to resolve it. Instead of telling me "sorry, we could not find a match for your DNS name" and let the computer ask alternative DNS servers (like the VPN's DNS), the ISP's DNS instead volunteers and routes me to their own search page.
3- my computer thinks the DNS query resolved fine, and doesn't try the other configured DNS servers.
 

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Net::DNS::RR::RP(3)					User Contributed Perl Documentation				       Net::DNS::RR::RP(3)

NAME
Net::DNS::RR::RP - DNS RP resource record SYNOPSIS
use Net::DNS; $rr = new Net::DNS::RR('name RP mbox txtdname'); DESCRIPTION
Class for DNS Responsible Person (RP) resource records. METHODS
The available methods are those inherited from the base class augmented by the type-specific methods defined in this package. Use of undocumented package features or direct access to internal data structures is discouraged and could result in program termination or other unpredictable behaviour. mbox $mbox = $rr->mbox; A domain name which specifies the mailbox for the person responsible for this domain. Its format in master files uses the DNS convention for mailbox encoding, identical to that used for the RNAME mailbox field in the SOA RR. The root domain name (just ".") may be specified to indicate that no mailbox is available. txtdname $txtdname = $rr->txtdname; A domain name identifying TXT RRs. A subsequent query can be performed to retrieve the associated TXT records. This provides a level of indirection so that the entity can be referred to from multiple places in the DNS. The root domain name (just ".") may be specified to indicate that no associated TXT RR exists. COPYRIGHT
Copyright (c)1997-2002 Michael Fuhr. Package template (c)2009,2012 O.M.Kolkman and R.W.Franks. All rights reserved. This program is free software; you may redistribute it and/or modify it under the same terms as Perl itself. SEE ALSO
perl, Net::DNS, Net::DNS::RR, RFC1183 Section 2.2 perl v5.18.2 2014-01-16 Net::DNS::RR::RP(3)
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