Hoping someone with KVM virtual networking experience or with more detailed know-how than myself can interpret what I’m looking at, the VMs I’m creating are being setup on a virtual network and access to a virtual DHCP I don’t know where from.
TIA,
TS
Setup:
Host:
openSUSE 12.1
KDE
KVM-QEMU
virt-tools
VMware Workstation 8.0
Ordinarily, there is no active real networking (physically disconnected from network) although I’ve tried with an active connection also, no diff
Guest VM :
Full Virtualization
openSUSE 11.4/Gnome/nm-applet (changed from ifup/ifdown)
Problem:
KVM VM Guest networking is somehow picking up a Class A Private address from some unknown DHCP, need to understand how/why this is happening. The VM can ping the gateway on its virtual network but otherwise cannot communicate beyond the gateway. Since the Class A network does not exist in any of the Host configurations I’ve displayed below (ifconfig and route), the Host cannot communicate with the VM except using VMM. Curiously, VMM is using TightVNC to communicate with the VM which AFAIK requires TCP/IP but am unable to determine how that is happening.
Virtual Machine Manager, Virtual Networking Configuration:
Started default Virtual Network
Name default
Device irbr0
State: Active
iPv4 configuration
Network 192.168.122.0/24
DHCP start 192.168.122.2
DHCP end: 192.168.122.164
Forwarding NAT
Known Virtual Networks
(From running ifconfig on Host)
VMware VMnet 192.168.252.0 /24
VMware VMnet 172.16.16.0 /24
KVM Netowrking 192.168.122.0 /24
Host ifconfig and route
openSUSE:/home/User # ifconfig
eth0 Link encap:Ethernet HWaddr 00:1B:24:7F:EC:54
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:45 Base address:0xe000
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:35145 errors:0 dropped:0 overruns:0 frame:0
TX packets:35145 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:14429052 (13.7 Mb) TX bytes:14429052 (13.7 Mb)
usb0 Link encap:Ethernet HWaddr AA:9D:6F:4A:5B:B2
inet6 addr: fe80::a89d:6fff:fe4a:5bb2/64 Scope:Link
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)
virbr0 Link encap:Ethernet HWaddr 00:00:00:00:00:00
inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0
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:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
vmnet1 Link encap:Ethernet HWaddr 00:50:56:C0:00:01
inet addr:172.16.112.1 Bcast:172.16.112.255 Mask:255.255.255.0
inet6 addr: fe80::250:56ff:fec0:1/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:35 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
vmnet8 Link encap:Ethernet HWaddr 00:50:56:C0:00:08
inet addr:192.168.252.1 Bcast:192.168.252.255 Mask:255.255.255.0
inet6 addr: fe80::250:56ff:fec0:8/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:37 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
wlan0 Link encap:Ethernet HWaddr 00:13:E8:5B:7B:71
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)
openSUSE:/home/User # route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
172.16.112.0 * 255.255.255.0 U 0 0 0 vmnet1
192.168.122.0 * 255.255.255.0 U 0 0 0 virbr0
192.168.252.0 * 255.255.255.0 U 0 0 0 vmnet8
Guest route
linux-4nqz:/home/User/Desktop # route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.0.2.0 * 255.255.255.0 U 1 0 0 eth0
loopback * 255.0.0.0 U 0 0 0 lo
default 10.0.2.2 0.0.0.0 UG 0 0 0 eth0