How to properly configure network in ubuntu with bridge and multiple ip?

Question

Computer networks

Hello!
Let's say there are three white sp 115.162.91.174; 115.162.91.165; 115.162.91.167
One eth0 network card on the server
Raised LXC, manually created bridge, virtual network 10.0.2.x, nat registered, everything works.
When the server starts, the standard appears:

waiting for network configuration
waiting an additional 60 seconds for network configuration

and the system takes a long time to load. This worries me (although everything works), because there was no such delay before!
Attention, question: Tell me, did I set up the network correctly?
Here is the network config:

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet manual

auto br0
iface br0 inet static
        address 115.162.91.174
        netmask 255.255.255.240
        gateway 115.162.91.161
        network 115.162.91.160
        broadcast 115.162.91.175
        dns-nameservers 8.8.8.8 8.8.4.4
        bridge_ports eth0
        bridge_stp off
        bridge_fd 0

auto br0:1
iface br0:1 inet static
        address 115.162.91.165
        netmask 255.255.255.240

auto br0:2
iface br0:2 inet static
        address 115.162.91.167
        netmask 255.255.255.240

auto lxc-br-nat
iface lxc-br-nat inet static
    address 10.0.2.1
    netmask 255.255.255.0
    gateway 10.0.2.1
    network 10.0.2.0
    broadcast 10.0.2.255
    dns-nameservers 8.8.8.8 8.8.4.4
    bridge_ports eth0
    bridge_stp off
    bridge_fd 0

ps, I noticed that the wait appears when specifying several IP addresses on the same network interface. does everyone have it?

Answer 1

Correct configuration:

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet static
        address 115.162.91.174
        netmask 255.255.255.240
        gateway 115.162.91.161
        network 115.162.91.160
        broadcast 115.162.91.175
        dns-nameservers 8.8.8.8 8.8.4.4

auto eth0:1
iface eth0:1 inet static
        address 115.162.91.165
        netmask 255.255.255.240

auto eth0:2
iface eth0:2 inet static
        address 115.162.91.167
        netmask 255.255.255.240

auto lxc-br-nat
iface lxc-br-nat inet static
    address 10.0.2.1
    netmask 255.255.255.0
    network 10.0.2.0
    broadcast 10.0.2.255
    dns-nameservers 8.8.8.8 8.8.4.4
    pre-up brctl addbr lxc-br-nat
    post-down brctl delbr lxc-br-nat
    bridge_stp off
    bridge_fd 0

Accordingly, the bridge-utils package must be installed and packet forwarding is allowed in the kernel net.ipv4.ip_forward = 1.

Answer 2

And so:

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet manual

auto lxc-br-nat
iface lxc-br-nat inet static
    address 10.0.2.1
    netmask 255.255.255.0

auto br0
iface br0 inet static
        address 115.162.91.174
        netmask 255.255.255.240
        gateway 115.162.91.161
        dns-nameservers 8.8.8.8 8.8.4.4
        bridge_ports eth0 lxc-br-nat
        bridge_stp off
        bridge_fd 0

auto br0:1
iface br0:1 inet static
        address 115.162.91.165
        netmask 255.255.255.240

auto br0:2
iface br0:2 inet static
        address 115.162.91.167
        netmask 255.255.255.240