Hi,

Thank you for your help, as I did not subscribe to the mailing list, I did not get your reply. I subscribe to the mailing list now and I am writing a new email thread.

apologies, was not aware of that.

When modem at gateway (for WAN uplink) is down and loses internet connection (but batman-adv connections with clients are good and dhcp server works good), can batman-adv clients know that internet connection is lost and "roam" to another gateway with good internet connection?

Seems you are looking for this: https://www.open-mesh.org/projects/batman-adv/wiki/Gateways

Kind regards, Marek