JDK-8133015 : InetAddress.isReachable(tmout) returning wrong value on Windows for IPv6
  • Type: Bug
  • Component: core-libs
  • Sub-Component: java.net
  • Affected Version: 6u65
  • Priority: P3
  • Status: Closed
  • Resolution: Fixed
  • Submitted: 2015-08-04
  • Updated: 2021-01-08
  • Resolved: 2015-08-21
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JDK 7 JDK 8 JDK 9
7u281Fixed 8u72Fixed 9 b80Fixed
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Description
Upon investigating what turned out to be a network traffic filtering problem it was noticed that Windows InetAddress.isReachable() leverages TCP to detect other hosts on the network. Since new APIs for using ICMP have been implemented in Windows 2000 it would be helpful to support them.