How to properly assign dedicated IPs for proxmox virtual machines?

Question

Computer networks

There is a server with virtual machines on proxmox (debian 8) and a network 88.99.45.112/28

The network configuration on the host machine is as follows:

auto eth0
iface eth0 inet manual

auto vmbr0
iface vmbr0 inet static
        address  138.201.255.22
        netmask  255.255.255.192
        gateway  138.201.255.1
        bridge_ports eth0
        bridge_stp off
        bridge_fd 0
#Bridge to eth0

auto vmbr1
iface vmbr1 inet static
        address  88.99.45.112
        netmask  255.255.255.240
        bridge_ports none
        bridge_stp off
        bridge_fd 0
#Hetzner subnet /28

auto vmbr2
iface vmbr2 inet static
        address  192.168.8.1
        netmask  255.255.255.0
        bridge_ports none
        bridge_stp off
        bridge_fd 0
#Internal Network 192.168.8.0/24 with DHCP

Virtual machines have 2 interfaces eth0 (to vmbr2), eth1 (to vmbr1).

eth0 inet addr:192.168.8.8  Bcast:192.168.8.255  Mask:255.255.255.0
eth1 inet addr:88.99.45.117  Bcast:88.99.45.127  Mask:255.255.255.240

The routes on the VM are:

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.8.1     0.0.0.0         UG    0      0        0 eth0
88.99.45.112    0.0.0.0         255.255.255.240 U     0      0        0 eth1
192.168.8.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0

It turns out that from outside the VM accesses via IP 88.99.45.117 , but itself sees the world via NAT'u at 192.168.8.0/24 and the host machine 's IP 138.201.255.22 lights up when requests are made . And you need to shine with your IP 88.99.45.117

What needs to be corrected in network settings or routing?

Answer 1

Why the hell do they need two network networks then? they will still go to each other locally and on the same bridge
, and it is so logical that they just change the gateway to IP on the first bridge and not on the second.

Answer 2

On virtual machines -
Remove the default gateway 192.168.8.1
Add a default gateway from the network 88.99.45.112/28 - most likely 88.99.45.113
An error in the config
address 88.99.45.112 will immediately catch your eye - this is not possible - your network address is
88.99. 45.113 - most likely the gateway from your provider, and everything else from 88.99.45.114 to 88.99.45.126 is your IP.