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Dear patacca,
First, thank you for running a relay!
Second, great advice from fatal here:
assuming that you run a linux realy, have a look at the interface with ethtool
sudo ethtool eth0
and look if it is in full of half duplex mode. If it is in halfduplex mode that will probably be the cause of the errors. you could try setting it to full duplex mode with e. g. 100 mbit/s with the following command:
sudo ethtool -s eth0 speed 100 duplex full autoneg off
this might crash your network connection, so be prepared for a remote reboot of the machine (or use IPMI if available).
I will add: You are seeing some frame errors, which could point to a bad cable or switch port. I would contact the provider and ask them two things:
1. What is the duplex setting on the switch port? Full? Auto? Half? If they are willing to hard-set it to full, which you then mimic on your end, all the better.
2. Are they seeing errors on input or output on the switch port? If so, ask them to replace the cable. If that doesn't do it, ask them to move you to a new switch port.
Good luck!
Be well, Rabbi Rob. - -- Rabbi Rob Thomas Team Cymru "It is easy to believe in freedom of speech for those with whom we agree." - Leo McKern