In tips 2721 and 1028, I discussed LMHOSTS entries.

If you preload a PDC (DomainName<1B>), the entry may not be recognized in the cache?

Due to an error in Windows NT and Windows 2000, you must use uppercase characters for the domain name, or the entry will not be recognized by NetBT.

The entry should look like:

<b>
192.168.0.1 "DOMAINNAME     \0x1b" #PRE</b>
             12345678901234567890
where the number of characters between the " marks must be exactly 20.