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292462 |
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19-Dec-2015 |
vangyzen |
MFC r289315, r292216
resolver: automatically reload /etc/resolv.conf
On each resolver query, use stat(2) to see if the modification time of /etc/resolv.conf has changed. If so, reload the file and reinitialize the resolver library. However, only call stat(2) if at least two seconds have passed since the last call to stat(2), since calling it on every query could kill performance.
This new behavior is enabled by default. Add a "reload-period" option to disable it or change the period of the test.
Document this behavior and option in resolv.conf(5).
Polish the man page just enough to appease igor.
Relnotes: yes Sponsored by: Dell Inc.
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