no IPv6 prefix pools on this shared network

[shafi at bbnl.co.in]

Hi,

     I have installed isc-dhcp-server in Ubuntu 12.04 for dhcpv6,it's 
working fine for systems but when I was trying to connect my cisco 
wireless router(e900)it's not getting ipv6 address from my dhcp server.i 
have check syslog in my server it's showing following error message.

        ERROR :  Unable to pick client prefix: no IPv6 prefix pools on 
this shared network

Please help to solve this issue.


my radvd.conf file :


interface eth0.19 {
         AdvSendAdvert on;
         AdvManagedFlag on;
         AdvOtherConfigFlag on;
         MinRtrAdvInterval 3;
         MaxRtrAdvInterval 10;
         prefix 2404:1f00:31:31::/64 {
                 AdvAutonomous off;
                 AdvRouterAddr on;
         };
RDNSS 2001:4860:4860::8888
{
AdvRDNSSLifetime 10;
};
DNSSL bbnl.in
{
AdvDNSSLLifetime 10;
};
};


Regards
shafi