I have a similar setup,  a tunnel routed over several different interfaces.

Configure both ends of the tunnel with all of the connection details and set an aggressive keepalive (5 seconds is what I use).


-- 
  Justin Kilpatrick
  justin@althea.net



On Sun, Aug 25, 2019, at 11:49 AM, 曹煜 wrote:
Hi,
I'm using wireguard on openwrt, and I have multi wan links. When I use wireguard as a server with mwan3, the wireguard client won't handshake because inbound interface and outbound interface is different.

Details please see:
https://github.com/openwrt/packages/issues/9538

How to fix this issue? Thanks.
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