snmp_udp_transport leaks memory - the addr_pair is never deallocated and never leaves the function so I changed it to be a local variable.
The attached patch corrects this and makes a small adjustment to a debug printout as well.
Patch to avoid memory leak in snmpUDPDomain
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Now publishing as an official patch.
Solved in 5.4 and trunk r15683
Solved in 5.2 and 5.3 in r 17293