Debian – Exclude interfaces from Network Manager

March 14, 2025
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sudo vi /etc/NetworkManager/NetworkManager.conf

[main]
plugins=ifupdown,keyfile

[ifupdown]
managed=false

[keyfile]

# In case of one interfaces – Name
# unmanaged-devices=interface-name:eth0

# In case of one interfaces – Names
# unmanaged-devices=interface-name:eth0; interface-name:eth1

# In case of one interfaces – MAC
# unmanaged-devices=mac:2c:3b:70:d6:d8:7f

# In case of multiple interfaces – MAC’s
# unmanaged-devices=mac:2c:3b:70:d6:d8:7f;mac:e8:ea:6a:40:2c:b7;mac:e8:ea:6a:40:2b:82