[Bug 203630] [Hyper-V] [nat] [tcp] 10.2 NAT bug in TCP stack or hyperv netsvc driver

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=203630

--- Comment #8 from Eddy <onyx at netfusion.fr> ---
Everything seems to work with the patch.

This is what I did:

- Create a clean new VM with FreeBSD 10.2 on the Hyper-V server.
- Activated IP forwarding: sysctl net.inet.ip.forarding=1
- On another computer (same LAN, running Windows 10): set the default gateway
to the new FreeBSD test VM. Ping/tracert to the internet work. TCP doesn't
work.

- Patch netvsc with the r285236 file you provided, in the
/usr/src/sys/dev/hyperv/netvsc/ folder (patch -i r285236)
- Rebuild and install the kernel, then reboot.
- TCP works from the LAN machines.

Thanks Wei!

Please note that I couldn't test it in a PPTP or NAT configuration.

Now I wait for the patch to be included in the next FreeBSD update (since I
usually don't build custom kernel).

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