06-26-2018, 02:23 PM | #1 |
Junior Member
Join Date: Jun 2018
Posts: 2
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Multicast Ethernet traffic is not being received
I am the owner of a Dell D6000 dock station which, as far as I know, is a DisplayLink device. Everything is working almost perfectly under Ubuntu 18.04, but I was not receiving IPv6 traffic on the dock's Ethernet port.
Upon closer inspection, I have discovered that Ethernet multicast traffic does not reach the computer, only broadcast and unicast traffic does. I have checked this with the wireshark tool. This was the ultimate reason why IPv6 was failing to obtain a valid address. I have also checked that mDNS, that also depends on proper Ethernet multicast, is not working, as avahi-discover does no show any device, unless I plug the computer to another dock in the same network segment. I am more than willing to provide any assistance to help to solve this issue. Best regards, Last edited by Miguel; 06-28-2018 at 05:15 PM. Reason: typo in title |
06-28-2018, 05:14 PM | #2 |
Junior Member
Join Date: Jun 2018
Posts: 2
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Bug (and patch) provided
This was a problem with linux's cdc_ncm driver. I have filed the corresponding bug at launchpad and also provided a patch that works ok for me.
https://bugs.launchpad.net/ubuntu/+s...x/+bug/1779173 |
07-19-2018, 01:21 PM | #3 |
Senior Member
Join Date: Feb 2010
Posts: 386
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Impressive, thanks! Fingers crossed for getting it upstream!
Regards, Michal |
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