Openssh has limited, dated, and buggy support for Kerberos authentication. For some time a patch has been maintained by Simon Wilkinson at: http://www.sxw.org.uk/computing/patches/openssh.html This patch works very well and has been steadily maintained for some time. At the same time it would appear the little Kerberos code in Openssh is suffering from bit-rot; it seems to be quite incomplete and buggy. Simon's code seems quite well respected on the openssh mailing list, but hasn't attracted the critical mass to become a priority for inclusion into the main Openssh codebase. I think this feature makes Openssh much more powerful: simple secure logins across the network, without having to type a password, yet without any user-managed keys that can be lost or compromised. I would like to humbly suggest that Red Hat consider including Simon's patch with your distributed version of openssh.
Perhaps I'm being a pest, but since my earlier comments still apply (and nobody's replied or changed the status from NEW), I'm bumping the version to 8.0.
No, the patch is based upon an internet-draft which is still in flux. If and when the draft stabilises, then we may consider adding it to core OpenSSH. Until then it would be irresponsible to widely deploy it.
Kerberos support is in the current releases.