Latest version 22.214.171.124 now support ProxyDHCP features.
In short :
TinyPXE Server can now co exist « peacefully » with another dhcp server on the same LAN.
No more race conditions where first one (dhcp server) to answer wins the lease.
With ProxyDHCP option enable, TinyPXE Server will now « only » provide the boot file name information (and only to proxydhcp clients) : the client will then use/combine the dhcp offers from both servers (lease+boot file name).
Tested with success with the following boot straps : ipxe , gpxe , pxelinux , startrom.0 , pxeboot.com …
Discuss it here at reboot.pro.
More info around PXE here.