Proxmox VE8.1 on Lenovo M720q with Intel I219V NIC: WebUI reachable, but no Internet after fresh install

[alex-gee]

Hello,

I currently run Proxmox on a HP T620+ Thin Client, but need a little bit more "juice"
I installed Proxmox several times on different machines, but never had an issue like that.

Just bought a used Lenovo M720q with 9500T and 64GB RAM and an Samsung Pro SATA SSD
NIC is a Intel I219V

Installation ran smoothly and I can also reach the WebUI , but I'm not able to reach the internet.
I realized quickly when I tried to update Proxmox.
Both NIC lights at the back are orange and red.

What I tried so far:

• I have set 8.8.8.8 as DNS to reduce failure points
• Added a different PCIe NIC (Intel X540-DA2) - same issue: I can connect to WebUI but no Internet
• enabled/disabled a few PXE network settings in BIOS
• optimized defaults in BIOS
• different network cables
• two different switches
• Tried to switch off functions of I219: https://first2host.co.uk/blog/how-to-fix-proxmox-detected-hardware-unit-hang/

root@pve-xxxx:~# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host noprefixroute
valid_lft forever preferred_lft forever
2: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether f8:75:a4:9d:f4:12 brd ff:ff:ff:ff:ff:ff
altname enp0s31f6
inet6 fe80::fa75:a4ff:fe9d:f412/64 scope link
valid_lft forever preferred_lft forever
3: enp1s0f0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether 00:1b:21:90:a7:5c brd ff:ff:ff:ff:ff:ff
4: enp1s0f1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq master vmbr0 state UP group default qlen 1000
link/ether 00:1b:21:90:a7:5d brd ff:ff:ff:ff:ff:ff
5: vmbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 00:1b:21:90:a7:5d brd ff:ff:ff:ff:ff:ff
inet 192.168.8.20/24 scope global vmbr0
valid_lft forever preferred_lft forever
inet6 fe80::21b:21ff:fe90:a75d/64 scope link
valid_lft forever preferred_lft forever



root@pve-xxxx:~# cat /etc/network/interfaces
auto lo
iface lo inet loopback

auto eno1
iface eno1 inet manual

iface enp1s0f0 inet manual

iface enp1s0f1 inet manual

auto vmbr0
iface vmbr0 inet static
address 192.168.8.20/24
gateway 192.168.8.3
bridge-ports enp1s0f1
bridge-stp off
bridge-fd 0
bridge-vlan-aware yes
bridge-vids 2-4094

source /etc/network/interfaces.d/*


Any suggestions for this issue of not having Internet access?
Any suggestions which I should try?

Thank you
Alexander

 

[shanreich]

Are you sure the gateway is correct (192.168.8.3) ?

Also, can you ping any external IP - e.g. 8.8.8.8 ?

 

[alex-gee]

Thank you for your suggestions.

The gateway is correct - it's an OPNSense FW with DHCP and I assigned a static IP there to avoid that an unavailable IP is assigned

I can't ping external IPs

I did a quick check with a windows installation, but I see exactly the same behavior there: Intranet yes, Internet no
I also checked against my productive Proxmox Server and the network settings are basically identical (beside the IP)

 

[shanreich]

Any settings on the OPNSense FW that would prevent traffic from going out? Is the Proxmox Server also behind the same OPNSense?

 

[alex-gee]

I found the issue - I usually use my piHole Server, but thought to avoid any blocking issues add use Google DNS = 8.8.8.8

Sounds like a smart idea, but does not work if you have a firewall rule in that specific VLAN, which blocks external DNS...

All good now Issue solved -> user error