<html> <head> <meta content="text/html; charset=UTF-8" http-equiv="Content-Type"> </head> <body bgcolor="#FFFFFF" text="#000000"> try default-gateway for guest 113.203.209.163 16.05.2012 19:07, Thorsten Göllner написал: <blockquote cite="mid:4FB3C2BD.1050301@ovm-group.com" type="cite"> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> Hi, I installed 12.04 on my host and installed a 12.04 guest under kvm/libvirt. I setup a bridge as described here <a moz-do-not-send="true" class="moz-txt-link-freetext" href="https://help.ubuntu.com/12.04/serverguide/network-configuration.html#bridging">https://help.ubuntu.com/12.04/serverguide/network-configuration.html#bridging</a> but my guest can not reach the internet nor other host within my local net. ON THE HOST: ============ ~$ ifconfig br0 Link encap:Ethernet HWaddr 00:25:90:57:02:c7 inet addr:113.203.209.163 Bcast:213.203.209.191 Mask:255.255.255.224 inet6 addr: fe80::225:90ff:fe57:2c7/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:5195 errors:0 dropped:0 overruns:0 frame:0 TX packets:3643 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:397189 (397.1 KB) TX bytes:2499669 (2.4 MB) eth0 Link encap:Ethernet HWaddr 00:25:90:57:02:c7 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:5417 errors:0 dropped:128 overruns:0 frame:0 TX packets:4775 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:528691 (528.6 KB) TX bytes:2591855 (2.5 MB) Interrupt:20 Memory:fba00000-fba20000 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:5442 errors:0 dropped:0 overruns:0 frame:0 TX packets:5442 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:2484575 (2.4 MB) TX bytes:2484575 (2.4 MB) vnet0 Link encap:Ethernet HWaddr fe:54:00:d2:d1:73 inet6 addr: fe80::fc54:ff:fed2:d173/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:103 errors:0 dropped:0 overruns:0 frame:0 TX packets:875 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:7882 (7.8 KB) TX bytes:55858 (55.8 KB) ~$ route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 113.203.209.161 0.0.0.0 UG 100 0 0 br0 113.203.209.160 0.0.0.0 255.255.255.224 U 0 0 0 br0 :~$ sudo iptables -L Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy DROP) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination ~$ brctl show bridge name bridge id STP enabled interfaces br0 8000.0025905702c7 no eth0 vnet0 ~$ sudo cat /etc/libvirt/qemu/guest.xml [...] <interface type='bridge'> <mac address='52:54:00:d2:d1:73'/> <source bridge='br0'/> <model type='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> [...] ON THE GUEST: ============= ~$ ifconfig eth0 Link encap:Ethernet HWaddr 52:54:00:d2:d1:73 inet addr:113.203.209.165 Bcast:213.203.09.191 Mask:255.255.255.224 [...] ~$ route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 113.203.209.161 0.0.0.0 UG 100 0 0 eth0 1213.203.209.160 0.0.0.0 255.255.255.224 U 0 0 0 eth0 :~$ sudo iptables -L Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy DROP) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination My NET: ======= host-server: 113.203.209.163 guest: 113.203.209.165 default gateway: 113.203.209.161 From the host-server I can ping all hosts and the internet. But on the guest I can ping the host (213.203.209.163) but no other host. (TX packets increases but no RX packets). Any idea? Best regards, -Thorsten- <fieldset class="mimeAttachmentHeader"></fieldset> </blockquote> </body> </html>