In CMU and UCD SNMP I used to be able to open a session (with no peer specified on the session structure) to get a socket opened and ready, and then create PDU's with specific remote addresses on each.
In this way I could send and receive to multiple different remote hosts over the same socket, with a minimum of overhead in allocated sessions and so forth. I see this has been replaced by some kind of transport abstraction layer, which is good, but I can't for the life of me figure out how to set the opaque transport_data field at PDU-create time to select different remote addresses other than to just bodge it by hand... I gather from a few places that you can use a copy of transport_data off a PDU you receive - provided you get a packet from the peer to start with - and put that on outgoing PDU's, which is a mechanism intended for replies. How do you prime that pump with a peer you've never yet contacted? -- Network Tools & Automation Twitter, Inc.
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