I am running macOS Catalina 10.15.3 with a USB-C hub from Minix, which has an ethernet port. Inside is an AX88179 chip for which I installed the correct driver. When I start my MacBook or when I plug in my USB-C hub everything works fine. The interface is called 'AX88179 USB 3.0 to Gigabit Ethernet 2'
However, after a few minutes the connection stops working. In the network overview it shows the green dot with 'connected'. When I use the 'Renew DHCP Lease' option the dot becomes orange with the 'Self-assigned IP' message. I see a wrong subnet mask and get an IP that is not within the network (
169.254.44.151). The cable is running straight to my modem/switch. WiFi is working just fine all the time.
What I tried:
- check if my Firewall is off, it is
- deleted the
- removing and re-adding the ethernet interface in the network pane. This does not work at all.
sudo tcpdump -i en9 port 67 or port 68(running
sudo ifconfigtells me it is
en9) and then renewing the DHCP lease. I get the following line a few times:
[time] IP 0.0.0.0.bootpc > broadcasthost.bootps: BOOTP/DHCP, Request from [MAC address I suppose] (oui Unknown), length 300and am still stuck with the 'Self-assigned IP'.
How can I fix the issue of the dropping ethernet connection and/or the self assigned IP?