I have a strange problem: I have 2 IP Adresses configured and I can't remove it, neither I know where it is configured.
> ip a s enp6s0
2: enp6s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether 18:31:bf:6a:cd:89 brd ff:ff:ff:ff:ff:ff
inet 192.168.178.3/24 brd 192.168.178.255 scope global enp6s0
valid_lft forever preferred_lft forever
inet 192.168.178.114/24 brd 192.168.178.255 scope global secondary noprefixroute enp6s0
valid_lft forever preferred_lft forever
I do have configured a static IP in /etc/network/interfaces, but no secondary IP at all:
## The primary network interface
auto enp6s0
iface enp6s0 inet static
address 192.168.178.3/24
gateway 192.168.178.1
dns-nameserver 192.168.178.1
the /var/log/syslog shows, that somehow a DHCP address is assigned to the Interface:
Jul 14 12:33:03 hogwarts dhcpcd[1897]: enp6s0: leased 192.168.178.114 for 864000 seconds
Jul 14 12:33:03 hogwarts dhcpcd[1897]: enp6s0: adding route to 192.168.178.0/24
Jul 14 12:33:03 hogwarts dhcpcd[1897]: enp6s0: adding default route via 192.168.178.1
deleting it manually is unsuccessful
ip a d 192.168.136.114/32 dev enp6s0
RTNETLINK answers: Cannot assign requested address
I can't find any systemd/initd skript being responsible for this IP being added.
What I already checked:
- I already configured systemd to "debug" to be more verbose, but no
luck. - No netplan config exits
- disabled NetworkManager in systemctl
Any ideas are appreciated!
System: Ubuntu 19.04 Server, upgraded from 18.04 LTS -> 18.10 -> 19.04
Best Answer
-> Antons point 2.) lead me to the solution:
somehow dhcpcd was running (hope neither docker nor virtualbox needs it) and everytime I deleted the IP with Antons point 1), it was obviously created once again.
so my solution is
Thx!