How to check ppp parent interface

Hi Guys,

I’m using VyOS as a BNG server, and i’d like to understand on which parent interface my ppp clients are using.

BNG server is listening on eth2.91 vlans from 100 to 4094

When a PPP comes up it comes over a eth2.91.XXX interface, and I’d need to get the XXX somehow.

With show pppoe-server interfaces i get all the XXX with the number of connections and the state, but if i want to know, for example, ppp25 where on which of those parent interface is, i can’t find the related command.

With show pppoe-server session I get login, username, ip and so on, but not the parent interface

Can you please help?

Thanks

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