Hi @Wiking 

Thanks for posting in our business forum.

1. Upgrade your firmware to the latest one.

2. Try to set up IPsec failover:

How to Configure IPsec Failover on Omada Router in Standalone mode

Note that everything should be the same in the IPsec failover setup except for the WAN.

Hi @Wiking 

Thanks for posting in our business forum.

Wiking wrote

  @Clive_A 

Thank you for answer, but that don't solve my problem. Already done it.

Here me out:

Site1 have dual WAN and Site2 also, so when Site2 goes on second wan the static IP change and there is no connection between sites. If i try to setup STS with other IP (for second wan on site2) i can't do that because of already used lan IP's.

 

 

Re-do the IPsec failover config again on the other site where you have a second line.

This is something new as I don't have the environment to try. So, I assume you do this setup on A and B once that should create something like you described.