Proxmox 8.4, no-carrier i226v

S

Sheidu

New Member
Apr 21, 2025
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Good day everyone.
I have Chatreey NAS (N150, 2x Intel Corporation controller i226-v (rev 04)). After a fresh installation of Proxmox 8.4 I cannot access network by plugging in an ethernet cable. I plug in the cable to Mikrotik AX3. I tried 2 different cables, both work with a different device. Once plugged in, ethernet ports on Mikrotik and NAS blink for a few seconds then stop.
I cannot ping NAS from Mikrotik but I can ping NAS from another PC in my network. I cannot ssh or telnet to NAS and I cannot access web UI of Proxmox.

Info from Mikrotik:
Bash: 
[root@MikroTik] > log print
2025-04-20 11:05:31 interface,info ether5 link up (speed 10M, full duplex)
2025-04-20 11:05:31 interface,info ether5 detect LAN
2025-04-20 11:05:34 interface,info ether5 link down
2025-04-20 11:05:36 interface,info ether5 link up (speed 1G, full duplex)
2025-04-20 11:05:36 interface,info ether5 detect LAN
2025-04-20 11:05:44 interface,info ether5 link down

[root@MikroTik] > /export hide-sensitive terse                                                                                                                                                   
# 2025-04-21 08:28:06 by RouterOS 7.18.2                                        
# model = C53UiG+5HPaxD2HPaxD
/interface bridge add name=bridge-localnet
/interface ethernet set [ find default-name=ether5 ] l2mtu=1598 mac-address=48:8F:5A:8F:1D:49 name=WAN
/interface ethernet set [ find default-name=ether4 ] l2mtu=1598 mac-address=48:8F:5A:8F:1D:4A name=ether2
/interface ethernet set [ find default-name=ether3 ] l2mtu=1598 mac-address=48:8F:5A:8F:1D:4B
/interface ethernet set [ find default-name=ether2 ] l2mtu=1598 mac-address=48:8F:5A:8F:1D:4C name=ether4
/interface ethernet set [ find default-name=ether1 ] advertise=10M-baseT-half,10M-baseT-full,100M-baseT-half,100M-baseT-full,1G-baseT-half,1G-baseT-full l2mtu=1598 mac-address=48:8F:5A:8F:1D:4D name=ether5
/interface wifi set [ find default-name=wifi2 ] channel.band=2ghz-ax .frequency=2472 .skip-dfs-channels=disabled .width=20/40mhz-eC configuration.chains=0,1 .country=<xxx> .mode=ap .multicast-enhance=disabled .ssid=Sheidu .tx-chains=0,1 disabled=no name=WiFi-2.4-localnet security.authentication-types=wpa2-psk .disable-pmkid=yes .wps=disable
/interface wifi set [ find default-name=wifi1 ] channel.band=5ghz-ax .frequency=5150-5350,5650-5825 .skip-dfs-channels=all .width=20/40/80mhz configuration.chains=0,1 .country=<xxx>.mode=ap .multicast-enhance=disabled .ssid=Sheidu_5 .tx-chains=0,1 disabled=no mtu=1500 name=WiFi-5-localnet security.authentication-types=wpa2-psk,wpa3-psk .disable-pmkid=yes .encryption="" .group-key-update=30m .wps=disable
/interface pppoe-client add add-default-route=yes disabled=no interface=WAN name=Rostelekom user=<xxxx>
/interface ethernet switch port set 0 default-vlan-id=auto
/interface ethernet switch port set 1 default-vlan-id=auto
/interface ethernet switch port set 2 default-vlan-id=auto
/interface ethernet switch port set 3 default-vlan-id=auto
/interface ethernet switch port set 4 default-vlan-id=auto
/interface ethernet switch port set 5 default-vlan-id=auto
/interface list add name=list-discovery
/interface list add name=LAN
/ip pool add name=dhcp_pool0 ranges=10.20.30.200-10.20.30.253
/ip dhcp-server add address-pool=dhcp_pool0 interface=bridge-localnet lease-time=1d name=dhcp-localnet
/ip smb set enabled=no
/interface bridge port add bridge=bridge-localnet interface=WiFi-2.4-localnet
/interface bridge port add bridge=bridge-localnet interface=WiFi-5-localnet
/interface bridge port add bridge=*E interface=*D
/interface bridge port add bridge=bridge-localnet hw=no interface=ether2
/interface bridge port add bridge=bridge-localnet hw=no interface=ether3
/interface bridge port add bridge=bridge-localnet hw=no interface=ether4
/interface bridge port add bridge=bridge-localnet hw=no interface=ether5
/interface detect-internet set detect-interface-list=all
/interface list member add interface=bridge-localnet list=list-discovery
/interface ovpn-server server add mac-address=FE:55:3D:3A:1B:F5 name=ovpn-server1
/ip address add address=10.20.30.254/24 interface=bridge-localnet network=10.20.30.0
/ip arp add address=10.20.30.201 interface=bridge-localnet mac-address=C8:FF:BF:04:E2:22
/ip dhcp-client add interface=WAN use-peer-dns=no use-peer-ntp=no
/ip dhcp-server lease add address=10.20.30.201 mac-address=C8:FF:BF:04:E2:22 server=dhcp-localnet
/ip dhcp-server network add address=10.20.30.0/24 dns-server=10.20.30.254 gateway=10.20.30.254 ntp-server=10.20.30.254
/ip dns set allow-remote-requests=yes servers=8.8.8.8,8.8.4.4 use-doh-server=https://dns.google/dns-query verify-doh-cert=yes
/ip firewall address-list add address=10.20.30.0/24 comment="Main LAN" list=LOCAL_SUBNETS
/ip firewall address-list add address=127.0.0.0/8 comment=Loopback list=LOCAL_SUBNETS
/ip firewall filter add action=accept chain=output comment="allow ICMP to MiniPC" dst-address=10.20.30.201 protocol=icmp
/ip firewall filter add action=accept chain=input comment="accept establish & related" connection-state=established,related
/ip firewall filter add action=drop chain=input comment="drop invalid" connection-state=invalid
/ip firewall filter add action=accept chain=input comment="allow ICMP to MiniPC" in-interface=bridge-localnet protocol=icmp src-address=10.20.30.0/24
/ip firewall filter add action=drop chain=input comment="drop ICMP" protocol=icmp
/ip firewall filter add action=drop chain=input comment="drop all not from lan" in-interface=!bridge-localnet
/ip firewall filter add action=accept chain=forward comment="accept established,related" connection-state=established,related
/ip firewall filter add action=accept chain=forward comment="allow ICMP to MiniPC" dst-address=10.20.30.201 in-interface=bridge-localnet out-interface=bridge-localnet protocol=icmp src-address=10.20.30.0/24
/ip firewall filter add action=accept chain=forward comment="allow SSH to MiniPC" dst-address=10.20.30.201 dst-port=22 in-interface=bridge-localnet out-interface=bridge-localnet protocol=tcp src-address=10.20.30.0/24
/ip firewall filter add action=accept chain=forward comment="allow access to Proxmox on MiniPC" dst-address=10.20.30.201 dst-port=8006 in-interface=bridge-localnet protocol=tcp src-address=10.20.30.0/24
/ip firewall filter add action=drop chain=forward comment="drop invalid" connection-state=invalid
/ip firewall filter add action=drop chain=forward comment="drop all from WAN to LAN" connection-nat-state=!dstnat connection-state=new in-interface=Rostelekom
/ip firewall nat add action=src-nat chain=srcnat out-interface=Rostelekom src-address=10.20.30.0/24 to-addresses=<xxxxxxx>
/ip service set telnet disabled=yes
/ip service set ftp address=127.0.0.1/32,10.20.30.0/24
/ip service set www disabled=yes
/ip service set ssh address=10.20.30.0/24,127.0.0.1/32
/ip service set api disabled=yes
/ip service set api-ssl disabled=yes
/system clock set time-zone-autodetect=no time-zone-name=<xxx>
/system note set show-at-login=no
/system ntp client set enabled=yes
/system ntp server set enabled=yes manycast=yes multicast=yes
/system ntp client servers add address=time.google.com
/system ntp client servers add address=pool.ntp.org
/system resource irq rps set WAN disabled=no
/system resource irq rps set ether2 disabled=no
/system resource irq rps set ether3 disabled=no
/system resource irq rps set ether4 disabled=no
/system resource irq rps set ether5 disabled=no
/tool bandwidth-server set enabled=no
/tool mac-server set allowed-interface-list=list-discovery
/tool mac-server mac-winbox set allowed-interface-list=list-discovery
/tool mac-server ping set enabled=no

Info from Proxmox:
Bash: 
root@pve: ip a
lo: <loopback, up, lower_up> mtu 65536 qdisc no queue state unknown group default qlen 1000 link/loop back 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
enp2s0: <no-Carrier, broadcast, multicast, up> mtu 1500 qdisc mq master vmbr0 state down group default qlen 1000
    Link/ether c8:ff:bf:04:e2:22 brd ff:ff:ff:ff:ff:ff
enp3s0: <broadcast, multicast> mtu 1500 qdisc noop state down group default qlen 1000
    Link/ether c8:ff:bf:04:e2:23 brd ff:ff:ff:ff:ff:ff
wlp4s0: <BROADCAST, MULTICAST> MTU 1500 QDISC NOOP state down group default qlen 1000
    Link/ether 6c:05:d3:d5:1e:cf brd ff:ff:ff:ff:ff:ff
vmbr0: <no-Carrier, broadcast, multicast, up> mtu 1500 qdisc no queue state down group default qlen 1000
    Link/ether c8:ff:bf:04:e2:22 brd ff:ff:ff:ff:ff:ff
inet 10.20.30.201/24 scope global vmbr0 valid_lft forever preferred_lft forever

root@pve: cat /etc/network/interfaces
auto lo
    iface lo inet loopback
auto enp2s0
    iface enp2s0 inet manual
auto vmbr0
    iface vmbr0 inet static
        address 10.20.30.201/24
        gateway 10.20.30.254
        bridge-ports enp2s0
        bridge-stp off
        bridge-fd 0

iface wlp4s0 inet manual

source /etc/network/interfaces.d/*

root@pve: lsmod | grep igc
igc 180224 0

root@pve: lspci | grep -i ethernet
Intel Corporation controller i226-v (rev 04)

root@pve: uname - r
6.8.12-9-pve

root@pve: dmesg | grep eth
1.131845J igc 0000:02:00.0 eth0: MAC: c8:ff:bf:04:e2:22
2.207113J igc 0000:03:00.0 eth0: MAC: c8:ff:bf:04:e2:23
3.404135J igc 0000:03:00.0 enp3s0: renamed from eth1
4.424059J igc 0000:02:00.0 enp2s0: renamed from eth0

Do I need to update drivers on Proxmox or is it an issue with Mikrotik? I just need a direction to move on.
 
Last edited:
It seems it was the Proxmox config issue. Because I didn't have a separate monitor for testing I used an old TV to look at Proxmox console. It was quite a pain because it doesn't support a proper screen resolution and it cuts borders. It seems the cut borders of the old TV affected it.
The line with >> was missed.

Code: 
root@pve: cat /etc/network/interfaces

auto lo

    iface lo inet loopback

>> auto enp2s0

    iface enp2s0 inet manual

auto vmbr0

    iface vmbr0 inet static

        address 10.20.30.201/24

        gateway 10.20.30.254

        bridge-ports enp2s0

        bridge-stp off

        bridge-fd 0


iface wlp4s0 inet manual


source /etc/network/interfaces.d/*

Now the link between Mikrotik and NAS exists.
1. Mikrotik sees NAS without setting MAC manually.
2.
Code: 
[root@MikroTik] > log print
ether5 link down
ether5 link up (speed 10M, full duplex)
ether5 detect LAN

But still, no arp response from NAS when I ping it from Mikrotik. The link is marked as failed.
 
Last edited:
Having decided, I completely reinstall Proxmox with the same parameters via Terminal Console option (I also used it when I was installing Proxmox for the first time).
Happily, everything works fine now. The only difference I noticed is that Proxmox uses enp3s0 instead of enp2s0 (I used the same port as before).
 
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