No network after clean install of v2.1

[sfsoft]

Hi all, I'm new on community and speak english not very well.
I've searched on forum and I've found some threads on network issue but they not helped me.

I've installed on a clean machine the version 2.1.
Setup is finished without any errors and it say me to connect to IP to open web interface.

But i've no in/out network access to VM host.
Logged on local shell and typing "ifconfig" seems that all network parameters are right (ip, subnet, gateway) but i can't ping any other machines on LAN and other machines can't ping VM host.
gateway also is configured.
iptables has all rules on ALLOW.

The NIC is ok, using a LiveCD (Ubuntu) the network is accessible.
The machine is a Dell Precision 690.
MD5 of ISO file is right.

Any idea?

Thanks, Fabio.

 

[techguys]

Post output from ifconfig and also your /etc/network/interfaces file...

 

[sfsoft]

ifconfig:

eth0      Link encap:Ethernet  HWaddr 00:10:18:19:9c:16  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:16 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:40 errors:0 dropped:0 overruns:0 frame:0
          TX packets:40 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:3776 (3.6 KiB)  TX bytes:3776 (3.6 KiB)

venet0    Link encap:UNSPEC  HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00  
          inet6 addr: fe80::1/128 Scope:Link
          UP BROADCAST POINTOPOINT RUNNING NOARP  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:3 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

vmbr0     Link encap:Ethernet  HWaddr 00:10:18:19:9c:16  
          inet addr:192.168.100.7  Bcast:192.168.100.255  Mask:255.255.255.0
          inet6 addr: fe80::210:18ff:fe19:9c16/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:55 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:0 (0.0 B)  TX bytes:2526 (2.4 KiB)

interfaces:

auto lo
iface lo inet loopback

auto vmbr0
iface vmbr0 inet static
    address 192.168.100.7
    netmask 255.255.255.0
    gateway 192.168.100.254
    bridge_ports eth0
    bridge_stp off
    bridge_fd 0

I've also tried version 2.0 with same issue, network configured but no in/out access

thank.

 

[Deleted member 22531]

Check out dmesg or /var/log/messages output. Maybe your network card requires some firmware..

 

[sfsoft]

Another info, I've tried also changing class of IP with same issue.

Giving "tcpdump -i vmbr0" I've only a continuous:

ARP, Request who-has 192.168.100.2 tell vmtest.domain.org, lenght 28
ARP, Request who-has 192.168.100.2 tell vmtest.domain.org, lenght 28
ARP, Request who-has 192.168.100.2 tell vmtest.domain.org, lenght 28
ARP, Request who-has 192.168.100.2 tell vmtest.domain.org, lenght 28
ARP, Request who-has 192.168.100.2 tell vmtest.domain.org, lenght 28

where 192.168.100.2 is DNS server

 

[sfsoft]

I've found the problem, giving "ifconfig -a" I've see another NIC (eth1)
Opening the PC I've found a second NIC hidden externally by a panel

On this machine we have always used the only NIC visible and we have not ever noticed of the second, also with Ubuntu LiveCD worked probably because assigned in reverse order of Proxmox.

Thanks all.

 

[udo]

I've found the problem, giving "ifconfig -a" I've see another NIC (eth1)
Opening the PC I've found a second NIC hidden externally by a panel

On this machine we have always used the only NIC visible and we have not ever noticed of the second, also with Ubuntu LiveCD worked probably because assigned in reverse order of Proxmox.

Thanks all.

Hi,
you can change the order of the nic in the file /etc/udev/rules.d/70-persistent-net.rules. The error is also visible in the third post - eth0 has 0 Bytes RX+TX.

Udo