[BUG] ipdevpoll no longer works with SNMPv1 about nav HOT 2 CLOSED

Packet inspection reveals that even though a device is configured with an SNMPv1 profile, ipdevpoll, naventity and navoidverify will send SNMPv2c packets to it.

Furthermore, this seems to happen even when the parameters of the generated AgentProxy instance are correct (i.e. snmpVersion='1').

Finally, it turns out the issue is with how AgentProxy works internally in the pynetsnmp library. The snmpVersion argument is actually expected to be a string that is prefixed with the letter v, as in v1, v2c or v3. The AgentProxy uses a dict to map these strings to an internal Net-SNMP value for SNMP version, and if the string doesn't match any of the known version strings, the AgentProxy silently defaults to v2c, leaving the user none the wiser.

from nav.

Fixed by #2780

from nav.