Add field to show IA_PD to DHCP6 Server page
When DHCP6 is enabled on an interface and Prefix Delegation is requested, there is nowhere in the GUI to see:
- whether an IA_PD was received from the ISP
- what the prefix was
This is an attempt to get this info by parsing dhcpd.log and display it on the DHCPv6 Server page. I don't know if there is any other way but I am of course open to input!