Fresh Install can't acces GUI on local network

Xelota

New Member
Dec 27, 2025
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Hello,

First i wish all of you à beautiful end of the years celebration.

i'am sorry to ask this question but after reading all post related i can't find my problem.

So i install a fresh proxmox 9.1 and can't acces GUI. i tried with two computer one on nix os et the other on windows 11

My router (freebox) is on 192.168.24.254
Proxmox is on 192.168.24.201
DHCP range is 192.168.24.2 to 192.168.24.200

(Sorry for the screen can't acces in ssh either)
On proxmox

ip a give 3 port (that's true) and for the installation just one is in use atm. nic2 (cf screen 1)
screen1.jpg
ip r give this

Code:
default via 192.168.24.254 dev vbmr0 proto kernel onlink
192.168.24.0/24 dev vbmr0 proto kernel scope link src 192.168.24.201

cat /etc/network/interfaces give this :

Code:
auto Io
iface Io inet loopback

iface nic2 inet manual

auto vbmr0
iface vbmr0 inet static
            address 192.168.24.201/24
            gateway 192.168.24.254
            bridge-ports nic2
            bridge-stp off
            bridge-fd 0
           
iface nic0 inet manual

iface nic1 inet manual

source /etc/network.interfaces.d/*

I can ping my router but not the two others pc.

cat /etc/hosts

Code:
127.0.0.1 localhost.localdomain localhost
192.168.24.201 proxmox.snep.local proxmox

#the following lines are desirable for IPV6 capable hosts

::1    ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::00 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts

curl https://192.168.24.201:8006 ok on the server

systemctl status pve* all is running with just two errors on pveproxy.service

code_language.rust:
command 'apt-get update' failed: exit code 100
<root@pam> end task UPID:proxmox:000005F1:00000568:6950144B:aptupdate::root@pam: command 'apt-get update' failed: exit code 100

On the pcs can't acces the GUI (screen2) can't ping my server but can ping the router.

screen2.png

And the think i don't understand if i try arp -n i obtain this.
Code:
[xelo@GLF-OS:~]$ arp -n
Address                  HWtype  HWaddress           Flags Mask            Iface
192.168.24.201                   (incomplete)                              enp4s0
192.168.24.172                   (incomplete)                              enp4s0
192.168.24.254           ether   20:66:cf:76:48:2a   C                     enp4s0

[xelo@GLF-OS:~]$ arp
Address                  HWtype  HWaddress           Flags Mask            Iface
192.168.24.201                   (incomplete)                              enp4s0
192.168.24.172                   (incomplete)                              enp4s0
192.168.24.254           ether   20:66:cf:76:48:2a   C                     enp4s0

[xelo@GLF-OS:~]$ arp -a
? (192.168.24.201) at <incomplete> on enp4s0
? (192.168.24.172) at <incomplete> on enp4s0
? (192.168.24.254) at 20:66:cf:76:48:2a [ether] on enp4s0

curl https://192.168.24.201:8006
Code:
[xelo@GLF-OS:~]$ curl https://192.168.24.201:8006
curl: (7) Failed to connect to 192.168.24.201 port 8006 after 3088 ms: Could not connect to server

Weird think i can't ping PC A to PC B or the reverse way.

On my router i see the proxmox on the interface (cf screen3)

Screen3.png

The other ip is me trying again and again ti install with different ip

Last think i reboot my switch in case ARP table is full

I'am totally lost thank you for your advice.
 
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