Dell D6000 dock (and I guess other docks too) exposes a CDC_NCM device for Ethernet traffic. However, multicast Ethernet traffic is not processed making IPv6 not functional. Other services, like mDNS used for LAN service discovery are also hindered. The actual reason is that CDC_NCM driver was not processing requests to filter (admit) multicast traffic. I provide two patches to the linux kernel that admit all Ethernet multicast traffic whenever a multicast group is being joined. The solution is not optimal, as it makes the system receive more traffic than that strictly needed, but otherwise this only happens when the computer is connected to a dock and thus is running on AC power. I believe it is not worth the hassle to join only the requested groups. This is the same that is done in the CDN_ETHER driver. Best regards, -- Miguel Rodríguez Pérez Laboratorio de Redes EE Telecomunicación – Universidade de Vigo -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
