I run networkmanager together with cockpit on Debian Buster. I have one physical interface and three VLANs on top of it. All of them are configured to have static IPs (ipv4.method: manual
). However, on top of the configured static IP (without gateway I must say), the interface ALWAYS receives an additional IP via DHCP. How can I prevent this from happening?
UPDATE
I followed the advice of not using network manager but I still receive a DHCP address on top of my statically configured IP. My config is like this:
#/etc/network/interfaces
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
allow-hotplug ens192
iface ens192 inet static
address 10.29.10.253/24
gateway 10.29.10.254
auto ens192.21
iface ens192.21 inet static
address 10.29.21.253/24
And the result looks like this
# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: ens192: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether 00:0c:29:92:0a:db brd ff:ff:ff:ff:ff:ff
inet 10.29.10.253/24 brd 10.29.10.255 scope global ens192
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:fe92:adb/64 scope link
valid_lft forever preferred_lft forever
3: ens192.21@ens192: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 00:0c:29:92:0a:db brd ff:ff:ff:ff:ff:ff
inet 10.29.21.253/24 brd 10.29.21.255 scope global ens192.21
valid_lft forever preferred_lft forever
inet 10.29.21.127/24 brd 10.29.21.255 scope global secondary noprefixroute ens192.21
valid_lft forever preferred_lft forever
inet6 fe80::78c0:87f0:55e:3191/64 scope link
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:fe92:adb/64 scope link
valid_lft forever preferred_lft forever
# ip route
ip route
default via 10.29.10.254 dev ens192 src 10.29.10.253 metric 202
default via 10.29.21.254 dev ens192.21 proto dhcp src 10.29.21.127 metric 203
10.29.10.0/24 dev ens192 proto dhcp scope link src 10.29.10.253 metric 202
10.29.21.0/24 dev ens192.21 proto dhcp scope link src 10.29.21.127 metric 203