Thank you @Tom-Elliott I reordered the bios boot order and now it works fine
@george1421 I figured it our but 1. Latest Trunk, 2. https://pcpartpicker.com/list/bD3wpb 3. new OS/fog install, but I have use this machine before, 4. Yes, 5. Not sure, IT did that based on your integrating fog with existing network article

When I go to image a computer, pxe starts on ipv4, then it claims to download the image, but promptly goes on to try pxe ipv6 and never boots to the image it just downloaded.
https://www.mediafire.com/folder/5fm19diihizsi/PXE_problems

@Sebastian-Roth I am able to run the tftp -v x.x.x.x -m binary -c get undionly.kpxe command from the machine I am trying to image, it worked. but pxe still reports no boot file recieved

if we assume that the DHCP setting of the router are correct (they worked before) is there anything else that could cause the problem?

did a clean install of Ubuntu 16.04 with newest latest trunk, installed with

sudo -i
git clone https://github.com/FOGProject/fogproject.git /root/fogproject
cd /root/fogproject
git checkout dev-branch
cd bin
php_ver='7.0' php_verAdds='-7.0' ./installfog.sh -y

so far it works fine
hopefully I can hosts and images from previous fog server

@Sebastian-Roth yah, I did a fresh pull each time

so to try to solve earlier problems, I did a clean install of fog trunk on a clean install of Ubuntu 16 following the directions laid out on these 2 pages https://wiki.fogproject.org/wiki/index.php?title=Ubuntu_16.04 https://wiki.fogproject.org/wiki/index.php?title=Upgrade_to_trunk
after 2 or 3 full clean boots, the fog/management/index.php page is completely blank, I have tried changing nothing, installing PHP7.1/7.0, mysql, and apache2 separately but the page is always blank.

@Sebastian-Roth both are running, I have previously been able to use this install to image on this network, and I dont think it has changed since then

there may be another DHCP server on the network, I don’t know, basically I have a room of 26 computers (one of which is the fog server) that I control all networked through a switch that I don’t control, that I dont know for sure, but I think that switch is running a DHCP server

I don’t remember, /opt/fog has ‘dodhce=“y”’ and ‘bldhcp=“1”’ if that helps