How to make SNMP Agent accept connections from other hosts in the network?

Edit the file /etc/snmp/snmpd.conf. Change the line:

agentAddress  udp:127.0.0.1:161

to:

agentAddress  udp:161

Then restart snmpd:

sudo service snmpd restart

It should listen to all interfaces now:

$ sudo netstat -ulnp | grep 161
udp        0      0 0.0.0.0:161             0.0.0.0:*                           8517/snmpd

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