MDnsHostAnnouncer allows you to create alias names for hosts in a local network
This tool is currently only tested with a FritzBox (Firmware 7.29) as DNS server.
I haven't found a way to create an alias (or CNAME) for a network device (PC, notebook etc.) in the FritzBox web-ui for DNS. But I saw a comment in an Internet forum, where someone claimed that the FritzBox listens to mDNS (MultiCastDNS) announcements and "integrates" them into its own list of hosts.
Example usage: If you have a physical machine named 'AlwaysOnSrv' an run the following command on it:
MDnsHostAnnouncer DatabaseSrv
You can now use the name 'DatabaseSrv' instead of 'AlwaysOnSrv' in ping commands or http requests, or anywhere else.
I couldn't find detailed documentation for this behavior, only a statement from AVM that "the Fritz!Box supports mDNS, but not Bonjour".
According to my experiments the FritzBox will "forget" the "mDNS entries" in its host list after about 6 hours.