[389-users] nsslapd-listen-backlog-size on 1.2.11.30

[Michael Gettes]

I’m trying to set nsslapd-listen-backlog-size which is documented to change the listen
queue backlog.  
I have net.core.somaxconn = 8192 and I am trying to set listen-backlog to 4096.  

dn: cn=config
cn: config
objectClass: top
objectClass: extensibleObject
objectClass: nsslapdConfig
nsslapd-listen-backlog-size: 4096
…

I get the following:

[02/Sep/2014:18:49:33 -0400] config - Unknown attribute nsslapd-listen-backlog-size will
be ignored
[02/Sep/2014:18:49:33 -0400] - 389-Directory/1.2.11.30 B2014.219.205 starting up
[02/Sep/2014:18:49:33 -0400] - slapd started.  Listening on All Interfaces port 389 for
LDAP requests
[02/Sep/2014:18:49:33 -0400] - Listening on All Interfaces port 636 for LDAPS requests

Why am I getting the Unknown attribute error?  (i feel like i am doing something really
stupid here).

/mrg