I have a small server on Raspberry Pi 4, Ubuntu 18.04.5 LTS. I use few service (apache, mysql, pihole). I want to setup an OpenVPN bridge (TAP). First thing I realized I have to uninstall netplan and back ifupdown, because netplan doesn’t support virtual interface.
Server IP address is 192.168.15.28/24 static.
I did
sudo apt update
sudo apt install ifupdown
sudo apt purge netplan.io
sudo rm -rf /usr/share/netplan
sudo rm -rf /etc/netplan
I edited /etc/network/interfaces
auto lo eth0
iface lo inet loopback
iface eth0 inet static
address 192.168.15.28
netmask 255.255.255.0
gateway 192.168.15.1
dns-nameservers 192.168.15.1
The bridge interface doesn’t work. I changed IP to 192.168.15.29 and after that I see strange things. Both IP 28 and 29 I can ping. In 192.168.15.28 working web page (apache) although in interfaces I set 29 not 28. I googled more to uninstall netplan (I think I did)
I did this:
ifdown --force eth0 lo && ifup -a
systemctl unmask networking
systemctl enable networking
systemctl restart networking
systemctl stop systemd-networkd.socket systemd-networkd
networkd-dispatcher systemd-networkd-wait-online
systemctl disable systemd-networkd.socket systemd-networkd
networkd-dispatcher systemd-networkd-wait-online
systemctl mask systemd-networkd.socket systemd-networkd
networkd-dispatcher systemd-networkd-wait-online
# apt-get --assume-yes purge nplan netplan.io
but still I can ping 192.168.15.28 AND 192.168.15.29
ifconfig output:
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.15.29 netmask 255.255.255.0 broadcast 192.168.15.255
inet6 fe80::e7d2:d506:fb86:6c97 prefixlen 64 scopeid 0x20<link>
ether dc:a6:32:78:e7:be txqueuelen 1000 (Ethernet)
RX packets 5600 bytes 647455 (647.4 KB)
RX errors 0 dropped 6 overruns 0 frame 0
TX packets 1872 bytes 1217307 (1.2 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 1190 bytes 76894 (76.8 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 1190 bytes 76894 (76.8 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlan0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether dc:a6:32:78:e7:bf txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
What can I do to get rid of netplan setup and use ifupdown and interfaces?
