I remember researching this too, and remember that we actually put a 10/8 address in the public DNS. AFAIK it is not considered good practice. I also remember a comment by one of my colleagues that the typical VPN software should also be able to handle this issue. Once you have a secure tunnel into your corporate network, you should be able to use the (single) DNS on your intranet. Peter van Eijk, Deloitte & Touche Bakkenist, Network Strategy & Architecture, tel: +31 6 53515927, www.van-eyk.net/pve, pvaneijk@deloitte.nl, pve@van-eyk.net

-----Original Message----- From: owner-dns-wg@ripe.net [mailto:owner-dns-wg@ripe.net]On Behalf Of Greg Cipollone Sent: 16 January 2002 15:23 To: dns-wg@ripe.net Subject: Question: resolution of private IP addresses

Dear all,

I have a simple question regarding the resolution of hostnames with private IP addresses.

One of our corporate customers would like to (mis)use DNS to allow the resolution of intranet hosts. The customer operates its own global VPN but for operational reasons cannot install / manage local DNS it each and every of its locations. Also, the customer does not want to operate a centralised intranet DNS service as the Internet connectivity, which is local in each country, in some of its remote locations would be severely affected (as DNS requests would take inordinate amount of time).

I have tried to research this but could not find anything that would be prevent the resolution to private IP addresses. The main concern is that ISP's would filter out their DNS cache to prevent this.

Any comments?

Best regards,

Greg Cipollone Technischer Direktor

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