UDP port 4500 sometime get blocked when allowed over bridge V2

PeterUK

https://community.zyxel.com/en/discussion/comment/65797#Comment_65797

So still happing this problem turns out was not the LAG bridge setup as I now have two port bridge on VPN300 but the only way to fix is to clear the NATT session in this case from 82.132.220.254 which UDP 4500 comes in on one interface of the bridge and does not send out the other interface until session is cleared then it flows. The problem happens randomly when IP changes normally.

So I'm hope there are some settings by SSH I can change to maybe help the problem? As I tried setting UDP timeout to 30 seconds thinking if the VPN fails it waits before retying so that the session would clear but it didn't work

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