From: Janne Johansson <icepic.dz@gmail.com>
To: Christoph Loesch <wireguard-mail@chil.at>
Cc: wireguard@lists.zx2c4.com
Subject: Re: Source IP selection or multi-home or multi-interface issue - solved with source-based route - was: Re: Wireguard source ip selection issue with multi interfaces
Date: Fri, 21 Oct 2022 15:25:41 +0200 [thread overview]
Message-ID: <CAA6-MF_AKBUPv9KzeUa2XoxR3m2YARuwtME+Vr_q8pg5NWpubQ@mail.gmail.com> (raw)
In-Reply-To: <e460fec5-3c8f-fafc-4a08-e739be1cf5c5@chil.at>
> "How should wireguard know which IP is the correct source IP address?"
>
> I digged into the source code but couldn't find the part where the source-IP is selected for outgoing connections (like a simple ping).
> I am not a developer but would like to try to understand it. Could someone give me a pointer?
I think it is left to the OS and it's tcp stack to pick the ip (and
interface) based on the UDP destination ip and the current routing
table when sending udp packets.
--
May the most significant bit of your life be positive.
next prev parent reply other threads:[~2022-10-21 13:25 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-19 13:10 曹煜
2021-11-23 13:52 ` Christoph Loesch
2022-10-19 22:47 ` Source IP selection or multi-home or multi-interface issue - solved with source-based route - was: " Christoph Loesch
2022-10-19 22:56 ` Christoph Loesch
2022-10-21 13:11 ` Christoph Loesch
2022-10-21 13:25 ` Janne Johansson [this message]
2022-10-21 14:12 ` 曹煜
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