How-to-enabling-dns-query-logging/22305 doesn't work 4me

when i follow

(uuh, Markuplanguage kills the “#”)
“# ucr get dns/backend”
so i do my backups and edit
/etc/univention/templates/files/etc/bind/named.conf like shown in the article
and commit and restart, I get
ldap[17991]: rndc: connect failed: connection refused
netstat doesn’t show port 55555 anymore.

If i comment out
options {
directory “/var/cache/bind”;
“# querylog yes;”
“# channel querylog {”
“# file “/var/log/querylog”;”
“# print-time yes;”
“# severity info;”
“# };”
“# category queries { querylog; };”
and restart bind, everything is back and good.

So maybe it will be useful to verify the article and rewrite the part with backend:ldap.