Hello everyone,
I am new to Proxmox, but what I saw so much is simply awesome. However while playing around with Proxmox I have one issue I was not able to solve so far, maybe anyone has an idea for this.
I did a basic installation with the Bare Metal ISO installer. Once it was running I uploaded a Windows XP ISO image, setup a KVM VE, bridged networking and installed XP.
My issue is now that networking within the XP Guest is not working at all. I can ping the IP of the Host, but nothing else, no hosts in the same subnet, no other Guests and not the gateway.
From what I have understood I need a bridge on the Host system (which is setup by default for the Bare Metal ISO) and I would configure the Guest Networking just as any other physical host on the same Subnet, right?
I tried playing around a bit and what I found out is when I run a tcpdump/wireshark on the Guest and send a Ping to the IP address configured in the Guest, this will not be caught by tcpdump. If I send the Ping to the broadcast, it is seen by the guest.
This leads me to the conclusion that somehow the Host OS does not acceppt the packets that have the virtual MAC of the Guests LAN interface as a destination.
Checking the arp table on the device I use to send the Ping I can see it contains the virtual MAC for the IP address, not the physical one of the bridge, but I guess that is expected.
I have tried virtio and the realtek devices as a virtual NIC. I have tried Ping and of course tried some tcp connections to be setup but it won't work. Seems that SYN requests from the Guest reach the destination, but the SYN ACK from the destination does not get back got the Guest (which again leads me to the arp issue mentioned above).
Does anyone ever see this before? Any ideas?
Thank you very much,
Andre
I am new to Proxmox, but what I saw so much is simply awesome. However while playing around with Proxmox I have one issue I was not able to solve so far, maybe anyone has an idea for this.
I did a basic installation with the Bare Metal ISO installer. Once it was running I uploaded a Windows XP ISO image, setup a KVM VE, bridged networking and installed XP.
My issue is now that networking within the XP Guest is not working at all. I can ping the IP of the Host, but nothing else, no hosts in the same subnet, no other Guests and not the gateway.
From what I have understood I need a bridge on the Host system (which is setup by default for the Bare Metal ISO) and I would configure the Guest Networking just as any other physical host on the same Subnet, right?
I tried playing around a bit and what I found out is when I run a tcpdump/wireshark on the Guest and send a Ping to the IP address configured in the Guest, this will not be caught by tcpdump. If I send the Ping to the broadcast, it is seen by the guest.
This leads me to the conclusion that somehow the Host OS does not acceppt the packets that have the virtual MAC of the Guests LAN interface as a destination.
Checking the arp table on the device I use to send the Ping I can see it contains the virtual MAC for the IP address, not the physical one of the bridge, but I guess that is expected.
I have tried virtio and the realtek devices as a virtual NIC. I have tried Ping and of course tried some tcp connections to be setup but it won't work. Seems that SYN requests from the Guest reach the destination, but the SYN ACK from the destination does not get back got the Guest (which again leads me to the arp issue mentioned above).
Does anyone ever see this before? Any ideas?
Thank you very much,
Andre
