[snmp] SNMP v3 discovery bug in 5.1

[Birgit Arkesteijn]

Hi Josh,

I agree with you (and Tim) that option 1 seems better, i.e.
"Move discovery in front of calling super.addPdu that way an exception
will not result in a tied up transmitter in the context."

As to
"Why isn't the DiscoveryBean using the context pool mechanism and 
creating its own context directly?"
I think that's a good point as well. It really should use the pool.

I'll start working on it. However, I'm not sure how much time I'll have 
to change & test the code. Next week I'm off for two weeks.

Oh, and thanks for the good detective work!

Cheers, Birgit

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