Had some issues with DHCP lately so as I was digging through log files, I found out that the foreman-proxy logs for MSFT DHCP do not contain the debug output of POST.

Here is the deletion, with debug output:

D, [2018-10-01T08:03:34.277498 ] DEBUG -- : Rack::Handler::WEBrick is invoked.
D, [2018-10-01T08:03:34.281519 8ff5c54c] DEBUG -- : #<Proxy::DHCP::Reservation:0x000000051c1f88 @type="reservation", @name="rack399serv3.lab.beer.town", @subnet=#<Proxy::DHCP::Subnet:0x000000051c2960 @network="100.90.89.0", @netmask="255.255.255.0", @ipaddr=#<IPAddr: IPv4:100.90.89.0/255.255.255.0>, @options={}, @m=#<Monitor:0x000000051c2028 @mon_owner=nil, @mon_count=0, @mon_mutex=#<Thread::Mutex:0x000000051c1fd8>>>, @ip="100.90.89.50", @mac="24:6e:96:18:00:75", @options={:deleteable=>true, :hostname=>"rack399serv3.lab.beer.town", :nextServer=>"100.90.128.69", :filename=>"pxelinux.0", :PXEClient=>"", 81=>0}>
D, [2018-10-01T08:03:34.281519 8ff5c54c] DEBUG -- : Deleting 'rack399serv3.lab.beer.town (100.90.89.50 / 24:6e:96:18:00:75)'
I, [2018-10-01T08:03:34.286499 8ff5c54c]  INFO -- : 100.90.128.69 - - [01/Oct/2018:08:03:34 -0500] "DELETE /dhcp/100.90.89.0/mac/24:6e:96:18:00:75 HTTP/1.1" 200 - 0.0090

But then here is the POST of the DHCP entry, where we see no information at all about what it sent:

D, [2018-10-01T08:03:34.329518 ] DEBUG -- : Rack::Handler::WEBrick is invoked.
I, [2018-10-01T08:03:34.360499 8ff5c54c]  INFO -- : 100.90.128.69 - - [01/Oct/2018:08:03:34 -0500] "POST /dhcp/100.90.89.0 HTTP/1.1" 200 - 0.0310

Would be really helpful if we could see what information it was passing to DHCP.