~# cat /etc/network/interfaces
auto lo
iface lo inet loopback
iface eth0 inet manual
iface eth1 inet manual
auto vmbr0
iface vmbr0 inet static
address A.B.C.D
netmask 255.255.255.0
gateway A.B.C.254
broadcast A.B.C.255
bridge_ports eth0
bridge_stp off
bridge_fd 0
network A.B.C.0
cat: /etc/network/interfaces: No such file or directory
May 24 11:28:41 ns369117 systemd[1]: Starting Raise network interfaces...
May 24 11:28:41 ns369117 ifup[9123]: Waiting for vmbr0 to get ready (MAXWAIT is 2 seconds).
May 24 11:28:41 ns369117 ifup[9123]: RTNETLINK answers: File exists
May 24 11:28:41 ns369117 ifup[9123]: ifup: failed to bring up vmbr0
May 24 11:28:42 ns369117 systemd[1]: networking.service: Main process exited, code=exited, status=1/FAILURE
May 24 11:28:42 ns369117 systemd[1]: Failed to start Raise network interfaces.
May 24 11:28:42 ns369117 systemd[1]: networking.service: Unit entered failed state.
May 24 11:28:42 ns369117 systemd[1]: networking.service: Failed with result 'exit-code'.
# cat /etc/systemd/network/50-default.network
# This file sets the IP configuration of the primary (public) network device.
# You can also see this as "OSI Layer 3" config.
# It was created by the OVH installer, please be careful with modifications.
[Match]
MACAddress=xx:xx:xx:xx:xx:xx
[Network]
Description=network interface on public network, with default route
DHCP=no
Address=a.b.c.x/24
Gateway=a.b.c.254
#IPv6AcceptRA=false
NTP=ntp.ovh.net
DNS=127.0.0.1
DNS=213.186.33.99
DNS=2001:41d0:3:163::1
Gateway=xxxx:xxxx:xx:xx:ff:ff:ff:ff:ff
[Address]
Address=xxxx:xxxx:xxxx:xxxx::/64
[Route]
Destination=xxxx:xxxx:xxxx:xxxx:ff:ff:ff:ff
Scope=link
Reinstall and use legacy network config without systemd - NetInstall ISO
[Match]
Name=eno1
#MACAddress=ff:ff:ff:ff:ff
[Network]
Bridge=vmbr0
Description=network interface on public network, with default route
DHCP=no
Address=a.b.c.d/24
Gateway=a.b.c.254
IPv6AcceptRA=no
NTP=ntp.ovh.net
DNS=127.0.0.1
DNS=213.186.33.99
DNS=2001:41d0:3:163::1
Gateway=xxxx:xxxx:xx:xx:ff:ff:ff:ff:ff
[Address]
Address=xxxx:xxxx:xxxx:xxxx::/64
[Route]
Destination=xxxx:xxxx:xxxx:xxxx:ff:ff:ff:ff
Scope=link