Sorry please download version 1.71 and try.
Okay there was a bug, please download OpenDHCPServerInstallerV1.67RC.exe one more time and retry.
Should always work.
Your hardware address may not be matching. Did you copy/paste above entry and message ?. Please check the lease html page and check if [12:34:56:78:90:12] is loaded in Free Static Leases or 192.168.1.10 already in use in network.
Please try version 1.67RC that should come across this issue and please let me know.
You are trying to use windows libraries. Please compile using:- g++ -W $SRCFILE -o$EXEFILE -lpthread for Linux. In Linux you can set the path on command line or rc file.
You are mixing Linux and Windows. For windows, download windows source code and Linux source code is in dualserver.tar.gz file.
When DHCP Server restarts it alwys retains lease information, it saves the lease information in DualServer.state file.