[c-nsp] DHCP_PD / IPv6

[vikas hazrati]

Hello all

I have been trying testing DHCP-PD functionality for ADSL / PPPoE users.
Using basic cisco-site examples I was
able to assign an IPv6 prefix to the CPE. The problem I am facing is the
following:

When the PPPoE session is torn down, the corresponding Virtual-Access
interface (and ipv6 routes) are deleted from
the NAS as expected, but in the CPE the DHCP-client remains up. So when the
PPPoE session is restablished no
new routes are installed in the NAS routing table for the DHCP delegated
prefixes, so no traffic can be forwarded to the
customer subnet.

The question is how can I make sure that in a DHCP-PD environment, the DHCP
client of the CPE is reinitialized
when the PPPoE session used for internet connectivity is re-established

The config used on the CPE side is really simple

interface Dialer 123
 encapsulation ppp
 dialer pool 123
 ipv6 address autoconfig default
 ipv6 enable
 ipv6 dhcp client pd DHCP_PD
 ppp pap sent-username **** password 0 ****


Any help is welcomed