[Bro-Dev] #461: internal_error called for async DNS failures

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#461: internal_error called for async DNS failures
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 Reporter:  seth     |      Owner:
     Type:  Problem  |     Status:  new
 Priority:  Normal   |  Milestone:  Bro1.6
Component:  Bro      |    Version:
 Keywords:           |
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 Bro shouldn't be shutting down when DNS lookups fail which is what
 internal_error leads to.  It seems that the main area people are having
 problems is the handling of the return value of nb_dns_activity, but I
 think that all internal_error calls in DNS_Mgr.cc should be audited.

 Maybe for the next release we can change the places where internal_error
 is called based on the nb_dns_activity return value and audit the rest of
 the internal_error calls later.

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Ticket URL: <http://tracker.bro-ids.org/bro/ticket/461>
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