PiHole broken on Pi 3 with 6.1

The PiHole install fails in multiple ways on a raspebrry pi3 model B. The pi crashes after selecting fixed IP address. Then when rebooting you get this

Configuring PHP: webserver

–2018-03-02 18:30:27-- https://raw.githubusercontent.com/rlerdorf/opcache-status/master/opcache.php
Resolving raw.githubusercontent.com (raw.githubusercontent.com)… failed: Temporary failure in name resolution.
wget: unable to resolve host address ‘raw.githubusercontent.com
–2018-03-02 18:30:27-- https://github.com/krakjoe/apcu/raw/master/apc.php
Resolving github.com (github.com)… failed: Temporary failure in name resolution.
wget: unable to resolve host address ‘github.com
[ SUB1 ] DietPi-Services > dietpi_controlled
[ OK ] DietPi-Services | dietpi_controlled : cron
[ OK ] DietPi-Services | dietpi_controlled : lighttpd
[ …] DietPi-Services | php7.0-fpm

And everything stops.

Tried a clean install several times, given up and gone back to dietpi prior to the 6 release which broke everything.

Bob