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Subject: Extend TCP keepalive tests to check handling of out of range
 parameter values
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From: stephen@isc.org
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Date: Fri, 03 Nov 2017 17:41:40 +0000
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The parameters

tcp-initial-timeout (25 - 1200)
tcp-idle-timeout (1 - 1200)
tcp-keepalive-timeout (1 - 65535)
tcp-advertised-timeout (0 - 65535)

... have documented valid ranges (shown above in parentheses).  The tests should be extended to check that the specification of out of range value causes BIND to emit a warning and adjust the value to the appropriate boundary.