Kerberos authentication on multi-homed servers

[Matthew Willis]

I have a question on how folks are dealing with using Kerberos on 
multi-homed servers, where each NIC has a different hostname.

For example, imagine a server with a "front-end" NIC connected to the 
Internet (server.domain.foo), and a "back-end" NIC on the backup 
network (server-backup.internal.domain.foo)/
If I want to ssh into the server via the back-end NIC, how can I copy 
the existing "host/server.domain.foo at REALM.FOO" principal to also 
handle "host/server-backup.internal.domain.foo at REALM.FOO" in 
krb5.keytab?

-lilmatt

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Matthew Willis
Information Technology
eCornell