<time> (esri) "host" not a valid server hostname, exiting.
<time> (esri) daemon shutdown requested - shutting down.
Could not start the FLEXlm License Server service on \\HOST
Error 1067: The process terminated unexpectedly.
The host name on the SERVER line of your license files <feature>.lic is incorrect.
If your SERVER line host name does not match this, you must edit each of your license files to reflect the new name.
Using a text editor, open you license files located under <Drive>:\Program Files\ESRI\License\<FEATURE>.lic.
Change the SERVER name to match the output of the host name command.