change nic in server


New Member
Apr 16, 2022
I have changed my nic from 4x 1Gb lan to 2x 1Gb lan and 2x 10Gb sfp+
After that I cant access proxmox on the same IP as before. I changed NIC back and set port 3 on NIC with another IP and than change it back to 2x 1G and 2x 10G NIC.
Still can not access server. Any idea what I should do to access server again.
I tried with putty and still connection refused on selceted IP. Is first IP locked on mac?
Last edited:


Well-Known Member
May 17, 2018
you will need to login directly on the server

most likely the name of your nic has changed. use ip link show to see the name of the nic with an active link

then edit your etc/network/interfaces to link vmbr0 to the name of your active nic


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