Source IP for multihomed peer

[Benda Xu]

Hi Svenne,

We have met exactly the same problem.

Svenne Krap <svenne at kracon.dk> writes:

> [...]
>
> My question is twofold:
>
> 1) Does the above seem like a likely chain of events?
>
> 2) Is there any way to force the source ip of the connection from boxA
> to always use address boxA1 ?
>
> From the documentation Listenport only seems like the portnumber and
> there seems to be no way to set the source ip.

It has been discussed on the list several times.  But Jason seems not
convinced of the necessity of address binding.

  https://lists.zx2c4.com/pipermail/wireguard/2017-May/001280.html
  https://lists.zx2c4.com/pipermail/wireguard/2019-March/003938.html
  https://lists.zx2c4.com/pipermail/wireguard/2018-June/003013.html
  https://lists.zx2c4.com/pipermail/wireguard/2017-November/002017.html

Rulin and I tried to implement an address binding feature at,

  https://github.com/FireflyTang/linux-wireguard-bind

It was verified to work with Linux-5.7.

Yours,
Benda