Put this in .ssh/config
Host *
# automatically share a connection through a socket
ControlMaster auto
# create the socket at a global path
ControlPath /tmp/%r@%h:%p
# leave the connection open after the last shell closes
# ControlPersist 2m
# CClub hosts
Host *.club
# turn these kind of domains into ones ending in .cc.cmu.edu
CanonicalizeHostname yes
CanonicalDomains cc.cmu.edu
Host *.club.cc.cmu.edu
# try to authenticate using kerberos tickets
GSSAPIAuthentication yes
# forward any forwardable tickets to the remote shell
GSSAPIDelegateCredentials yes