This is strange. So, the reverse resolution behavior is intentional (and highly broken--it's a long story) but can be disable by setting rdns=true in the libdefaults section of krb5.conf.
Gss calls gss_import_name (lib/gssapi/krb5/import_name.c) and that calls krb5_sname_to_principal (src/lib/krb5/os/sn2princ.c) which is almost certainly your problem. However I think that just calls getaddrinfo and getnameinfo so I suspect something strange is going on here. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
