Description of problem:
DS allows to set a higher value of nsslapd-numlisteners than its limit of 4:

# dsconf localhost config get nsslapd-numlisteners
nsslapd-numlisteners: 1
# dsconf localhost config replace nsslapd-numlisteners=5
Successfully replaced "nsslapd-numlisteners"
# dsconf localhost config get nsslapd-numlisteners
nsslapd-numlisteners: 4
# grep nsslapd-numlisteners /etc/dirsrv/slapd-localhost/dse.ldif
nsslapd-numlisteners: 5

# systemctl restart dirsrv@localhost
# dsconf localhost config get nsslapd-numlisteners
nsslapd-numlisteners: 4
# grep nsslapd-numlisteners /etc/dirsrv/slapd-localhost/dse.ldif
nsslapd-numlisteners: 5


Version-Release number of selected component (if applicable):
389-ds-base-2.3.4-3.el9.x86_64


How reproducible:
always