Just minor added comments ... > -----Original Message----- > From: cisco-nsp-boun...@puck.nether.net [mailto:cisco-nsp- > boun...@puck.nether.net] On Behalf Of Phil Mayers > Sent: Friday, December 11, 2009 11:41 > > Michael Robson wrote: > > It's been a while since I worked with IPV6 and I am now once again > > plunging myself into this feckless world and was wondering if a > > couple of holes had now been plugged. What is the accepted way in > > IPV6 land to dish out IPV6 DNS server addresses (am I correct in > > saying that if you make use of NDP, you would still have to manually > > configure DNS servers)? The other hole, as was, is the lack of IPV6 > > There are 4 methods: > > * Don't use IPv6 DNS - use IPv4 DNS servers (via DHCPv4 or other). I > believe this is pretty common
This is how WinXP does it, both IPv4 and IPv6 (A and AAAA) queries being sent over IPv4. I like to call it "cheating" :). > * Static config of IPv6 DNS servers, possibly using an anycast address > (I seem to recall there are products which try a well-known DNSv6 > address, but I can't remember what products, and what address) If you are thinking of the fec0:0:0:ffff::1 (and ::2 and ::3) style addresses those died along with Site-Local Addressing. (But you will still see those entries in every IPv6-enabled Win* platform ... ) (Automagic DNS --> http://tools.ietf.org/html/draft-ietf-ipv6-dns-discovery-07 SLAs deprecated --> http://tools.ietf.org/html/rfc3879 ) > * Advertisment in RA packets - RFC 5006. I think support for this on > IOS is pretty thin - I'm fairly sure 6500s don't support it and don't > have it roadmapped (sigh) Also waiting for client-side support. (sigh+=1) > * DHCPv6 > > > help address functionality on Cisco routers (well 6500s at least): if > > I were to go down the route of using DHCP for IPV6, how could I use a > > central server without this helper functionality? > > 6500s running SXI have gained the DHCPv6 relay support. Sadly, it > doesn't interoperate with 6vPE (which we use) so I've only tested it > lightly, but it more or less worked. > > Of course, many clients don't support DHCPv6 (e.g. WinXP) so you may > still need a solution for those. ... baby steps ... tiny, agonizingly slow, sometimes wobbly baby steps. /TJ _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/