Networkmanager

Setting up network manager to be DHCP profile with a failback to a static profile.

• /etc/NetworkManager/system-connections/

Create two profiles
DHCP profile
'Wired connection 1.nmconnection'

[connection]
id=Wired connection 1
uuid=fae7a174-6066-3083-ac48-64732c448a3d
type=ethernet
autoconnect-priority=1
autoconnect-retries=2
interface-name=end1
timestamp=1706580352

[ethernet]

[ipv4]
dns-search=
method=auto
dhcp-timeout=10
may-fail=false

[ipv6]
addr-gen-mode=default
method=disabled

[proxy]

Static Profile
'Wired connection 2.nmconnection'

[connection]
id=static
uuid=fae7a174-6066-3083-ac48-64732c448a3d
type=ethernet
interface-name=end1
autoconnect-priority=0
autoconnect-retries=-1

[ethernet]

[ipv4]
address1=192.168.1.2/24,192.168.1.1
dns=192.168.1.1
dns-search=
method=manual

[ipv6]
addr-gen-mode=default
method=disabled

[proxy]