Ping from proxmox does not work

G

gusto

Well-Known Member
Feb 10, 2018
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2
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I installed proxmox 7.3 today. During installation, proxmox received an IP address from the DHCP server 192.168.1.19 (GW 192.168.1.1, DNS 192.168.1.1). I immediately updated proxmox.

Then I edited the network configuration file. I changed the proxmox IP address to 192.168.1.3. I changed the proxmox IP address to 192.168.1.3. Here is the configuration file.
Code: 
auto lo
iface lo inet loopback
 
iface enp1s0 inet manual
 
iface eno1 inet manual
 
auto vmbr1
iface vmbr1 inet static
        address 192.168.1.3/24
        gateway 192.168.1.1
        bridge-ports enp1s0
        bridge-stp off
        bridge-fd 0
 
auto vmbr0
iface vmbr0 inet manual
        bridge-ports eno1
        bridge-stp off
        bridge-fd 0
 
auto vmbr2
iface vmbr2 inet manual
        bridge-ports enp1s0.20
        bridge-stp off
        bridge-fd 0
 
auto vmbr3
iface vmbr3 inet manual
        bridge-ports enp1s0.30
        bridge-stp off
        bridge-fd 0
 
auto vmbr4
iface vmbr4 inet manual
        bridge-ports enp1s0.40
        bridge-stp off
        bridge-fd 0
 
auto vmbr5
iface vmbr5 inet manual
        bridge-ports enp1s0.50
        bridge-stp off
        bridge-fd 0

Now I tried apt update and the internet is not working. Ping doesn't work either. Not even on GW 192.168.1.1.
Ping only works on some IP addresses in the LAN.
From another machine in the LAN, ping to Proxmox 192.168.1.3 works.
I have no idea where the problem is.
 
Probably no one would come up with that.
I always use the static IP 192.168.1.3 for proxmox.
I use pfsense firewall and in DHCP I have bind MAC with IP addresses.
For the IP address 192.168.1.3, I had the MAC address from the previous Proxmox.
 
Did you resolve this issue? If not can you post the output of
Code: 
ip a
and
Code: 
iplink
Another suggestion would be to run a tcpdump on the bridge interface and observe output.
Code: 
tcpdump -i vmbr1

Maybe restart the networking service as well?
Code: 
systemctl restart networking
 
Yes, the problem is solved.
The problem was not proxmox, but the DHCP server.
Proxmox had a MAC address of vmbr0 18:c0:4d:0a:03:2c and an IP address 192.168.1.3
DHCP had a different MAC address 6c:60:eb:90:bc:c4 assigned to the IP address 192.168.1.3
 
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