IPv6 DNS Autoconfiguration (via RA)

[Antonio Knox]

I am new to ipv6 and I'm trying to wrap my head around autoconfiguration and how it relates to DNS. I've read that (R)DNS server information could be added to Router Advertisments so that clients that receive prefixes for ipv6 addressing also get the DNS server information to complete the client's configuration.

I have yet to see anywhere how to configure RAs to assign DNS servers along with the prefix. I've looked at every 'ipv6 nd' command I can find and I've found nothing. Can someone please explain to me how this is supposed to work? I'll be able to make a lot of more progress once I get this part figured out. Thanks, folks.

[Harold Ritter · Accepted solution]

Antonio,

You can use Stateless DHCP for IPv6 in conjunction with IPv6 autoconfiguration to achieve what you want.

Here's a sample configuration:

http://www.cisco.com/en/US/docs/ios/12_2t/ipv6/v6_dhcp_ps6350_TSD_Products_Configuration_Guide_Chapter.html#wp1125846

Regards,

[Antonio Knox]

Thanks. This is exactly what I'm looking for! Thanks for your time.

[twgraham]

New link for this is:

http://www.cisco.com/en/US/docs/ios/ipv6/configuration/guide/ip6-nat_trnsln_ps6350_TSD_Products_Configuration_Guide_Chapter.html

Following may be useful as well:

http://www.cisco.com/en/US/technologies/collateral/tk648/tk872/tk373/technologies_white_paper_09186a00802219bc.html