Need help in forwarding SNMPv3 informs with snmptrapd

Hi,
I want to forward snmp v3 INFORM from VM-1 to VM-2, here is my
configuration on VM-1 and VM-2.

I'm generating INFORM on VM1, destination being loopback address.

Can someone help me with the configuration?

I get  "usm: Failed to find engine data."
 and snmptrad always core-dumps.

with this topology snmv3 TRAP works without any issues, it's just v3
informs that are creating trouble.

Even v2 INFORM works.

VM1:

root@Ubuntu3323:~# cat /tmp/snmptrapd.conf
authCommunity log,net public
snmpTrapdAddr udp:162,udp6:162
forward default 2.2.2.2:162

createUser feroz SHA feroz123 DES feroz123
authUser log,net feroz priv
root@Ubuntu3323#

*Start snmptrapd on VM1*

root@Ubuntu3323:# /usr/sbin/snmptrapd -f -C -c /tmp/snmptrapd.conf -Lo -d
-Dusm,snmptrapd,sess_async_send &

*Generate link-up notification on VM1.*

root@Ubuntu3323:# snmpinform -Ci -v 3 -a SHA -A feroz123 -x DES -X feroz123
-l authPriv -u feroz localhost 0 IF-MIB::linkUp

*  VM2 :*

root@Ubuntu3322:# cat /tmp/snmptrapd.conf
createUser feroz SHA feroz123 DES feroz123
authUser log feroz priv
root@Ubuntu3322:#

*Start snmptrapd as follows on VM2*


root@Ubuntu3322:~# /usr/sbin/snmptrapd -f -C -c /tmp/snmptrapd.conf -d -Lo
-Dusm,snmptrapd






-- 
Regards,
Feroz Ahmed

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