This object marks whether a port is trusted by the PPPoE intermediate agent, controlling whether PPPoE discovery packets already carrying agent tags are accepted or have those tags stripped and reinserted. Administrators typically mark uplink or trusted network ports as trusted so tags from an upstream trusted device pass through unmodified, while subscriber-facing ports are marked untrusted. For example, setting this to False(2) on a subscriber access port ensures any Circuit-ID or Remote-ID tags a misconfigured client device tries to inject are discarded and replaced by the switch's own tags.