[SOLVED] Routing issue on quad network interface

[bharrisii]

Hey all. I have had my Proxmox homelab setup running for some time without issue. However, when I try to designate a network subnet to an interface I run into issues. My goal is to have a dedicated bridge for DMZ systems/containers that will be off a network port on my Pfsense FW. So far I am able to ping the host assigned to the DMZ on the broad network, but the DMZ host cannot contact its gateway. I am banging my head as this seems like it should work. From the PfSense I am seeing arp and can ping it as well.


Proxmox host:
proxmox-ve: 7.2-1 (running kernel: 5.15.39-4-pve)


DMZ host:




Thank you for any suggestions.

 

[Dunuin]

10.0.0.0/16 is no valid IP. Either leave it empty or give PVE a valid IP like 10.0.0.2/16.

 

[bharrisii]

I tried that using either blank or as you suggested. The DMZ host still cannot ping the gateway on the FW 10.0.0.1. However, when I changed the IP to 10.0.0.2 it was able to ping the PVE host, but again in isolation.

Update IP on the Proxmox host:


DMZ host:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
default 10.0.0.1 0.0.0.0 UG 0 0 0 eth0
10.0.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0

Thanks!

 

[bharrisii]

SOLVED. Thank you for the help, I was able to sort it out. I had an IP overlap for the VPN, I forgot about as well only allowed TCP on my test rule so ICMP would not work by design. I had a feeling it was something I was over looking.