How can I test network connectivity to a Keberos KDC (UDP/88)

How can I test network connectivity to a Keberos KDC (UDP/88)? Does Kerberos have a standard way to communicate that gives any output?

HTTP for example,

nc -v google.com 80
GET

will dump the website

nc -v smtp.gmail.com 587
ehlo localhost.localdomain

will dump the options I have (like starttls)

But kerberos, being UDP, I can't even test if the socket is open, the only way I'm able to test if there is a firewall issue is to log into the KDC, stop kerberos, and start netcat on that port

[[email protected] ~]$ nc -l -u 88 
[[email protected] ~]$ nc kdc.example.com -u 88