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tun: replace the DNS client in netstack with net.Resolver #43

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tun: replace the DNS client in netstack with net.Resolver #43

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Commits on Mar 6, 2021

  1. mod: bump x/sys 

    Signed-off-by: Jason A. Donenfeld <[email protected]>
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    zx2c4 committed Mar 6, 2021
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  2. conn: linux: unexport mutex 

    Signed-off-by: Jason A. Donenfeld <[email protected]>
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    zx2c4 committed Mar 6, 2021
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  3. memmod: do not use IsBadReadPtr 

    It should be enough to check for the trailing zero name.

Signed-off-by: Jason A. Donenfeld <[email protected]>
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    zx2c4 committed Mar 6, 2021
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  4. memmod: use resource functions from x/sys 

    Signed-off-by: Jason A. Donenfeld <[email protected]>
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    zx2c4 committed Mar 6, 2021
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  5. winpipe: move syscalls into x/sys 

    Signed-off-by: Jason A. Donenfeld <[email protected]>
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    zx2c4 committed Mar 6, 2021
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  6. tun: replace the DNS client in netstack with net.Resolver 

    Use the net.Resolver DNS client to send domain lookups to the server
specified as a CreateNetTUN parameter. The net package's DNS client
handles DNS request and response parsing when PreferGo is true.

Like the previous DNS client it replaces, the net.Resolver instances
also sends DNS queries over the WireGuard connection. Tested on and with
support from Fly.io.

Signed-off-by: Ben Burkert <[email protected]>
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    benburkert committed Mar 6, 2021
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