LinuxQuestions.org - SNMPv3 Unknown user name?!

I've installed net-snmp and was sure this was working with SNMPv3 user authentication on Friday. Suddenly it does not seem to be working today.

I stop the snmpd daemon, then type the following:

Code:

net-snmp-config --create-snmpv3-user -ro -A mypassword -a SHA -X mypassword -x AES myuser

which adds a line to the end of /var/lib/net-snmp/snmpd.conf as follows:

Code:

createUser myuser SHA "mypassword" AES mypassword

I have also added the following line to /etc/snmp/snmpd.conf:

Code:

rouser myuser

then I start snmpd as follows:

Code:

snmpd -Lo -C -c /etc/snmp/snmpd.conf -f

the problem is that when trying to do an snmpwalk I get the following error:

Code:

snmpwalk -v 3 -u myuser -l authPriv -A mypassword -a SHA -X mypassword -x AES localhost

snmpwalk: Unknown user name

I notice in /var/lib/net-snmp/snmpd.conf that the line createuser is removed but no other lines are added, no usm line is added!

I've done all of this before last week and it worked, I don't understand why it's not working now. I wrote a script of my steps as I did this and verified that it worked, I am a bit confused as to what if anything I am missing.

I'm not sure if there is one or two problems here, because not only is snmpd swallowing the user, but when repeating the snmpwalk operation when the daemon was shut down I got exactly the same error.

Any ideas on this weirdness?