GSSAPIKeyExchange yes
EOF
/etc/init.d/ssh reload
-dpkg-reconfigure krb5-config # Change realm to ATHENA.MIT.EDU
+# Set default realm to ATHENA.MIT.EDU
+printf "krb5-config\tkrb5-config/default_realm\tstring\tATHENA.MIT.EDU" | debconf-set-selections
+dpkg-reconfigure -fnoninteractive krb5-config
# install keytab
# install /root/.k5login
ntpdate