Kerberos on the Internet

[a]

Hi all!
I have to set up a Kerberos installation, but users are supposed to be able
to authenticate from their home PC too. This means that they have dynamic
IP.
I have no experience about kerberos and
ll documentation I have found talks about a LAN, and it looks like Kerberos
is very picky about FQDN and IP to identify hosts.
Does it count for users systems too, or only for kerberized services?

Thank you,
FB