I have a router with G0/0 facing upstream, and getting DHCPv6 NA for G0/0 as well as DHCPv6-PD /56 which I use on G0/1 facing downstream, where I use SLAAC with a /64 from the PD for my laptop and other devices.
INTERNET------[G0/0] ROUTER [G0/1]------LAPTOP
SLAAC works fine with the PD prefix and I get connectivity as well as default gateway from the RA.
The problem is here: From DHCPv6 I also get IPv6 DNS servers (can see that from sh ipv6 dhcp interface below), and I cant seem to figure out how to automatically send the v6 DNS server I learn from DHCP into RDNSS automatically/dynamically to my device via SLAAC
The only way I can get v6 DNS to my laptop is by manually confiuring DHCPv6 server on the router and statically configuring the DNSv6 server in the pool and using the O-flag on G0/1. Thats hardly dynamic !
ROUTER#sh ipv6 dhcp interface
IA PD: IA ID 0x00050001, T1 166424, T2 266278
preferred lifetime 332848, valid lifetime 937648
expires at Dec 01 2015 06:48 AM (932311 seconds)
DNS server: 2000:DB8:200::6
Domain name: example.com
Prefix name: prefix-pd
ipv6 address prefix-pd ::1/64
ipv6 nd other-config-flag
ipv6 dhcp server dnspool
Anyone have any ideas ?
Im aware RDNSS was only in recent code. Should be able to run 15.x on my router
Solved! Go to Solution.
spot on - thank you
worked like a charm on 151-4.M10
I also added import domain-name
ipv6 dhcp pool dnspool