Internal local network between LXC Proxmox 6.2

[monteros007]

Hi,

I'm new in Proxmox solutions. Actually I have one vmbr0 Linux bridge on proxmox host with eno1 bridge to public network. My lxc have one eth0 which is connect with vmbr0 bridge + failover public IP and gateway is public IP proxmox host. This configuration is okey to my lxc because I use singly. At now I have build 3 new lxc which one has 1 public IP and two others only local address. I create new bridge vmbr1 on proxmox host:
-vmbr1
-linux bridge
-cidr 10.0.0.254

and configuration on 1 lxc:
- eth1
- mac
- bridge to vmbr1
- cidr 10.0.0.10

and configuration on 2 lxc:
- eth1
- mac
- bridge to vmbr1
- cidr 10.0.0.11

I restarted proxmox host but none of them ping from lxc1 to lxc2 or to host.

What is bad in this configuration?

Best Regards

 

[wolfgang]

Hi,

this config should work.
are the vmbr1 has autostart selected?

 

[monteros007]

yes, vmbr1 is set to autostart. After restarted proxmox interface is visible and up.

 

[monteros007]

 

[wolfgang]

I guess the problem is your subnet at the container.
You must use subnet 24 or use the correct routing.

 

[monteros007]

Sorry but I added interface eth1 from proxmox GUI. I don't change another network settings on LXC. Should I ?

 

[wolfgang]

You have to set in the GUI the correct subnet.
IPv4/CIDR: 10.0.0.10/24

 

[monteros007]

ok so I change subnet as below and nothing change:
1 LXC
eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.0.0.12 netmask 255.255.255.0 broadcast 0.0.0.0
inet6 fe80::4c30:3ff:fe80:c17b prefixlen 64 scopeid 0x20<link>
ether 4e:30:03:80:c1:7b txqueuelen 1000 (Ethernet)
RX packets 14833 bytes 931173 (909.3 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 14 bytes 1100 (1.0 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
2 LXC
eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.0.0.10 netmask 255.255.255.0 broadcast 0.0.0.0
inet6 fe80::fc0c:30ff:fe28:8194 prefixlen 64 scopeid 0x20<link>
ether fe:0c:30:28:81:94 txqueuelen 1000 (Ethernet)
RX packets 8 bytes 640 (640.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 25 bytes 1510 (1.4 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

and ping

[root@dev1 ~]# ping 10.0.0.12
PING 10.0.0.12 (10.0.0.12) 56(84) bytes of data.
From 10.0.0.10 icmp_seq=1 Destination Host Unreachable
From 10.0.0.10 icmp_seq=2 Destination Host Unreachable
From 10.0.0.10 icmp_seq=3 Destination Host Unreachable

Thanks and Best Regards

 

[wolfgang]

How does the route in the LXC looks like?

ip r

 

[monteros007]

LXC1:

[root@dev1 ~]# ip r
default via PUBLIC_IP dev eth0
10.0.0.0/24 dev eth1 proto kernel scope link src 10.0.0.10
10.0.0.1 dev eth1 scope link
PUBLIC_IP dev eth0 scope link
169.254.0.0/16 dev eth0 scope link metric 1002
169.254.0.0/16 dev eth1 scope link metric 1003