I have used the code from freesoft, and the fake daemon had successfully discovered all the argument passed to it from Lmgrd.
Actually I have got the following outputs from the fake daemon,

10:16:45 (lmgrd) Starting vendor daemons ...
10:16:45 (lmgrd) daemon.exe
-T
myserver
8.1
-1
-c
lic.txt
--lmgrd_start

Then when I try to start the daemon with it:
synd -T myserver 8.1 -1 -c lic.txt
or add the -app switch,
synd -app -T myserver 8.1 4 -c lic.txt
the daemon still try to connect to the lmgrd,

10:17:59 ($ynplctyd) Vendor daemon can't talk to lmgrd (Cannot connect to licens
e server (-15,10:10061 "WinSock: Connection refused"))

This is for the synd of $ynplify, it is from Flexlm 8.1. When I tried the saros of Hdrturbowriter(flexlm7.0d), the daemon can be started by this methord.

I am not sure if the higher version of Flexlm daemon can't be started in this way,
thanks,