tree 293e50dd013f91ceca8f65d539a16fde1d155c92
parent 9d11ddfd5c3872b7ced68ecdef76af8fc0183981
author Hungming Chen <nuccachen@google.com> 1642860956 +0800
committer Hungming Chen <nuccachen@google.com> 1643113931 +0800

[CLATJ#23] Close the file descriptor manually

ParcelFileDescriptor rely on garbage collection to close handler.
When there is any error during starting clat or quick on/off
IPv6 only network, the file descriptor may not be able to be closed
before next clatStart is called. This may be problematic. For
example, the same v4- tun interface has not closed yet and clatStart
has been called again.

Test: connect/disconnect to IPv6 only network and ping 8.8.8.8
      repeat 10 times
Change-Id: I8e1c66206dc221827a039213ecc86d5cbd777dff