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TMM crash when processing requests to a DNS virtual server.
Traffic disrupted while tmm restarts.
The issue can occur if a UDP DNS virtual receives a request when no pool members are available to service the request and a DNS iRule is suspended due to previous requests.
Mitigation is to ensure at least one pool member is available whenever the DNS virtual is processing traffic, or to avoid iRule commands that can suspend processing. Ensure datagram LB mode is enabled on UDP DNS virtuals.
This release prevents a crash in DNS processing on UDP virtual server with no available pool members.
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