/usr/share/ipa/kdcproxy-disable.uldif is in freeipa-server 4.7.0~pre1+git20180411-2ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | # Disable MS-KKDCP protocol for the current host
dn: cn=KDC,cn=$FQDN,cn=masters,cn=ipa,cn=etc,$SUFFIX
remove:ipaConfigString:kdcProxyEnabled
|