From bug 790004: """ 2/ When many ip addresses (v4,v6) are set on various interfaces, broker sets them all into ClusterURL, then start to generate encoding error. for example: --cite-- 2012-10-26 09:04:59 [System] error Exception thrown by timer task ManagementAgent::periodicProcessing: Could not encode string of 281 bytes as uint8_t string. (qpid/framing/Buffer.cpp:246) """ """ Issue 2 is an independent bug - it would have previously occurred if the list of interfaces were long enough. It's exacerbated because IPv6 literal addresses tend to be long. """