No. You are using
tun(4), which states:
Quote:
Packets sent to this interface can be read by a userland process and processed as desired. Packets written by the userland process are injected back into the kernel networking subsystem.
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You also clarified your use:
Quote:
I'm ... using pppoe to ... authenticate user in network
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Authentication is not a heavy bandwidth consumer.
1) How are you configuring your queues?
Share that section of your configuration.
2) How are you measuring outbound bandwith queuing?