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From: Marek Lindner <mareklindner@neomailbox.ch>
Subject: Re: Any suggestions about configuring batman-adv gateways + modems
Date: Mon, 11 Nov 2019 09:37:59 +0800
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Hi,

> Yes, batman-adv gateway is what I am using.
> 
> Do I need to write or find a daemon at gateway to sense internet
> connection, once internet connection is lost (and does not recover
> within like 2-5 minutes) then advertise batman-adv mesh network by
> "batctl gw_mode client" to turn this node to be a client?

you can have a mechanism to detect if the uplink connectivity is down and then 
have the batman-adv gateway switch to client. When the uplink is back, you can 
switch to gateway mode again.

Depending on how your uplink works, you may not need to write a separate 
daemon to check (though you can if you want). Most uplink solutions provide 
some kind of scriptable event for up/down changes. Depends very much on your 
setup and what you'd like to react to. 

Cheers,
Marek

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