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PPPoE relay not working as expected

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Robertof

New Around Here
Hello,

I need some advice on a problem I found on both the Merlin firmware and the stock one. I have an RT-AC56U, and my configuration is the following:

Code:
ISP's modem <--> ASUS RT-AC56U <--> Clients

The RT-AC56u is configured to use PPPoE as the connection mechanism, with the authentication parameters given by my provider, and it works fine. However, I have to establish a PPPoE session on one of my clients, and I thought that the "PPPoE relay" option was made exactly for this purpose: to forward PPPoE packets to the modem connected to the WAN interface of the ASUS.

Enabling the option, though, makes no effect. PPPoE sessions don't work: Windows gives me error 651, on Linux pppoeconf fails, and pppoe-discovery does not show anything.

The only thing that changes when enabling the option is the creation of this process on the router:
Code:
/usr/sbin/pppoe-relay -C br0 -S eth0 -F
Looking at the manpage of pppoe-relay and at the interfaces of the router, the command line looks correct, but I don't get why it isn't working. I am 100% sure that the problem is not on the ISP's router side - it allows multiple PPPoE sessions without any kind of problem.

Can someone give me some advice on what to do? I can provide any details about my configuration, and I am willing to perform any test.

Thank you,
Roberto
 

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