Hi everyone ! Sorry for my very bad english I tried to install kvm for virtualization on a Hetzner EQ4 server and i would like to use the 3 addtional ip for 3 virtual machine..but i have a little problem: the virtual machine seem to working fine, it take the assigned ip address..but after some minutes it lost connection! The virtual machine continue to work, but without connection: i try to connect them using vnc through ssh tunnel on the host machine, and i can login, but there isn't external connection. The machine is unreachable also from host machine. So, after some minutes, the network restart to working always for some minutes, then i lost the connection again. The connection with host server workin always fine. This is my configuration: Host : Debian minimal (with only package kvm libvirt-bin virtinst bridge-utils fail2ban vim-nox) Guest : Debian Lenny installed with virt-install I modified only /etc/sysctl.conf that actualy is Code: net.ipv4.conf.all.rp_filter=1 net.ipv4.icmp_echo_ignore_broadcasts=1 net.ipv4.ip_forward=1 net.ipv6.conf.all.forwarding=1 net.ipv4.conf.default.proxy_arp=1 and /etc/network/interfaces that actualy is Code: # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback # The primary network interface #allow-hotplug eth0 #iface eth0 inet dhcp auto eth0 iface eth0 inet manual auto br0 iface br0 inet static address xxx.xxx.xxx.106 broadcast xx.xxx.xxx.127 netmask 255.255.255.224 gateway xx.xxx.xxx.97 bridge_ports eth0 bridge_fd 9 bridge_hello 2 bridge_maxage 12 bridge_stp off All other file are untoched On virtual machine i assigned the new ip (xx.xxx.xxx.117) and the host address as gateway (xxx.xxx.xxx.106) my ifconfig return Code: br0 Link encap:Ethernet HWaddr bb:bb:bb:bb:bb:bb inet addr:xxx.xxx.xxx.106 Bcast:xxx.xxx.xxx.127 Mask:255.255.255.224 inet6 addr: yyyy::yyyy:yyyy:yyyy:yyyy/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1670 errors:0 dropped:0 overruns:0 frame:0 TX packets:1369 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:143571 (140.2 KiB) TX bytes:189891 (185.4 KiB) eth0 Link encap:Ethernet HWaddr aa:aa:aa:aa:aa:aa inet6 addr: yyyy::yyyy:yyyy:yyyy:yyyy/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1615 errors:0 dropped:0 overruns:0 frame:0 TX packets:997 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:146089 (142.6 KiB) TX bytes:149866 (146.3 KiB) Interrupt:250 Base address:0x8000 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: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) vnet0 Link encap:Ethernet HWaddr bb:bb:bb:bb:bb:bb inet6 addr: zzzz::zzzz:zzzz:zzzz:zzzz/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:374 errors:0 dropped:0 overruns:0 frame:0 TX packets:651 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:47999 (46.8 KiB) TX bytes:61678 (60.2 KiB) It's normal that br0 and vnet0 had the same mac address ? On my local server, br0 always had eth0 mac address... Someone can help me ?
I don't know if it's the cause or the consequence, but when i lost connection i can see on the /var/log/messages of host system Code: Feb 9 16:52:31 server1 kernel: [ 897.631377] eth0: received packet with own address as source address
