Hello people. I am using Proxmox with routed setup. I got a interfaces conf looking like this:
I got a /29 subnet so I added it except broadcast and network IPs.
I've tried to add network and broadcast IPs the same way (/32) but suddenly everything went unreachable but hey let's ignore that for a while.
I tried to add a vmbr1 with private lan 10.10.10.1/24 to add a second NIC to every VM. I would like to open services or ssh only on private lan for specific VMs but also I would like to have both private and public IPs.
So I added:
And I restarted networking.
I added one IP from proxmox, , let's say 10.10.10.100/24 on the 100 ID VM. Used the proxmox, add network, add vmbr1, and IP 10.10.10.100/24 with gw 10.10.10.1
I could ping it, but then I couldn't ping anything on the public subnet. Not even one VM not only the only that I added the IP.
Every VM lost connectivity. Couldn't ping anything from the internet or inside host. I only had ping with the one VM that I added the second private bridge.
I immediately removed the NIC from the VM, nothing, I then removed the vmbr1 from interfaces and restart networking, still nothing.
After a reboot it was OK.
What am I missing here ?
I got a /29 subnet so I added it except broadcast and network IPs.
auto lo
iface lo inet loopback
iface enp35s0 inet manual
auto vmbr0
iface vmbr0 inet static
address x.x.x.101
netmask 255.255.255.192
gateway x.x.x.65
broadcast x.x.x.127
bridge_ports enp35s0
bridge_stp off
bridge_fd 0
up ip route add x.x.56.121/32 dev vmbr0
up ip route add x.x.56.122/32 dev vmbr0
up ip route add x.x.56.123/32 dev vmbr0
up ip route add x.x.56.124/32 dev vmbr0
up ip route add x.x.56.125/32 dev vmbr0
up ip route add x.x.56.126/32 dev vmbr0
I've tried to add network and broadcast IPs the same way (/32) but suddenly everything went unreachable but hey let's ignore that for a while.
I tried to add a vmbr1 with private lan 10.10.10.1/24 to add a second NIC to every VM. I would like to open services or ssh only on private lan for specific VMs but also I would like to have both private and public IPs.
So I added:
auto vmbr1
iface vmbr1 inet static
address 10.10.10.1
netmask 255.255.255.0
bridge_ports none
bridge_stp off
bridge_fd 0
post-up iptables -t nat -A POSTROUTING -s '10.10.10.0/24' -o vmbr0 -j MASQUERADE
post-down iptables -t nat -D POSTROUTING -s '10.10.10.0/24' -o vmbr0 -j MASQUERADE
And I restarted networking.
I added one IP from proxmox, , let's say 10.10.10.100/24 on the 100 ID VM. Used the proxmox, add network, add vmbr1, and IP 10.10.10.100/24 with gw 10.10.10.1
I could ping it, but then I couldn't ping anything on the public subnet. Not even one VM not only the only that I added the IP.
Every VM lost connectivity. Couldn't ping anything from the internet or inside host. I only had ping with the one VM that I added the second private bridge.
I immediately removed the NIC from the VM, nothing, I then removed the vmbr1 from interfaces and restart networking, still nothing.
After a reboot it was OK.
What am I missing here ?
