LXC Debian 9.9 takes two IPs even if he has static configuration

[supermario87]

Hi, I have this strage behaviour on only this container.

He has a static IPconfigured but it also take a dhcp lease without any specific configuration
This problem appears only on this LXC.

Do you have some infos on how to debug and solve this problem?

I have already tried to remove network interface with not success.


Thanks

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
33: eth0@if34: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether da:99:f2:62:b4:90 brd ff:ff:ff:ff:ff:ff link-netnsid 0
inet 192.168.10.8/24 brd 192.168.10.255 scope global eth0
valid_lft forever preferred_lft forever
inet 192.168.10.99/24 brd 192.168.10.255 scope global secondary eth0
valid_lft forever preferred_lft forever
inet6 fe80::463e:9b47:1a59:c2da/64 scope link
valid_lft forever preferred_lft forever

cat /etc/network/interfaces
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
address 192.168.10.8
netmask 255.255.255.0
gateway 192.168.10.1

cat /etc/pve/lxc/102.conf
arch: amd64
cores: 1
hostname: vpn
memory: 512
net0: name=eth0,bridge=vmbr1,firewall=1,gw=192.168.10.1,hwaddr=DA:99:F2:62:B4:90,ip=192.168.10.8/24,type=veth
onboot: 1
ostype: debian
rootfs: local-lvm:vm-102-disk-0,size=16G
swap: 0
unprivileged: 1
lxc.mount.entry: /dev/net dev/net none bind,create=dir

pveversion -v
proxmox-ve: 5.4-1 (running kernel: 4.15.18-14-pve)
pve-manager: 5.4-5 (running version: 5.4-5/c6fdb264)
pve-kernel-4.15: 5.4-2
pve-kernel-4.15.18-14-pve: 4.15.18-39
pve-kernel-4.15.18-13-pve: 4.15.18-37
pve-kernel-4.15.18-12-pve: 4.15.18-36
pve-kernel-4.15.18-11-pve: 4.15.18-34
pve-kernel-4.15.18-10-pve: 4.15.18-32
corosync: 2.4.4-pve1
criu: 2.11.1-1~bpo90
glusterfs-client: 3.8.8-1
ksm-control-daemon: 1.2-2
libjs-extjs: 6.0.1-2
libpve-access-control: 5.1-9
libpve-apiclient-perl: 2.0-5
libpve-common-perl: 5.0-51
libpve-guest-common-perl: 2.0-20
libpve-http-server-perl: 2.0-13
libpve-storage-perl: 5.0-42
libqb0: 1.0.3-1~bpo9
lvm2: 2.02.168-pve6
lxc-pve: 3.1.0-3
lxcfs: 3.0.3-pve1
novnc-pve: 1.0.0-3
openvswitch-switch: 2.7.0-3
proxmox-widget-toolkit: 1.0-26
pve-cluster: 5.0-37
pve-container: 2.0-37
pve-docs: 5.4-2
pve-edk2-firmware: 1.20190312-1
pve-firewall: 3.0-20
pve-firmware: 2.0-6
pve-ha-manager: 2.0-9
pve-i18n: 1.1-4
pve-libspice-server1: 0.14.1-2
pve-qemu-kvm: 3.0.1-2
pve-xtermjs: 3.12.0-1
qemu-server: 5.0-51
smartmontools: 6.5+svn4324-1
spiceterm: 3.0-5
vncterm: 1.5-3
zfsutils-linux: 0.7.13-pve1~bpo2

 

[oguz]

hi.

check if you have a dhcp service running.

ps aux | grep dhc

if you see `dhcpcd` or similar daemon in the output:

systemctl stop dhcpcd
systemctl disable dhcpcd

and reboot should fix it.