Hi all. I have currently an OpenVZ server: uname -a Linux vader8.superhost.pl 2.6.32-042stab055.16 #1 SMP Fri Jun 8 19:22:28 MSD 2012 x86_64 x86_64 x86_64 GNU/Linux cat /etc/redhat-release CentOS release 6.2 (Final) lspci | grep -i eth 01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 03) cd /etc/sysconfig/network-scripts cat ifcfg-eth0 DEVICE="eth0" BOOTPROTO=none NM_CONTROLLED="no" ONBOOT="yes" TYPE="Ethernet" HWADDR=00:25:22:0D:C2:2A DOMAIN=domain.eu IPV4_FAILURE_FATAL=yes IPV6INIT=no NAME="System eth0" UUID=5fb06bd0-0bb0-7ffb-45f1-d6edd65f3e03 BRIDGE=vmbr0 cat ifcfg-eth0.20 DEVICE=eth0.20 BOOTPROTO=none ONBOOT=yes VLAN=yes BRIDGE=vmbr20 cat ifcfg-vmbr20 DEVICE=vmbr20 BOOTPROTO=none DHCPCLASS= IPADDR=10.20.0.108 NETMASK=255.255.0.0 ONBOOT=yes TYPE=Bridge cat ifcfg-vmbr0 DEVICE=vmbr0 BOOTPROTO=none DHCPCLASS= IPADDR=195.218.152.219 NETMASK=255.255.255.0 ONBOOT=yes TYPE=Bridge cat ifcfg-vmbr0:1 DEVICE=vmbr0:1 BOOTPROTO=none IPADDR=192.168.2.203 NETMASK=255.255.255.0 ONBOOT=yes cat ifcfg-venet0 DEVICE=venet0 ONBOOT=yes STARTMODE=onboot route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.2.0 0.0.0.0 255.255.255.0 U 0 0 0 vmbr0 195.218.152.0 0.0.0.0 255.255.255.0 U 0 0 0 vmbr0 10.20.0.0 0.0.0.0 255.255.0.0 U 0 0 0 vmbr20 169.254.0.0 0.0.0.0 255.255.0.0 U 1003 0 0 vmbr0 169.254.0.0 0.0.0.0 255.255.0.0 U 1006 0 0 vmbr20 0.0.0.0 193.218.152.1 0.0.0.0 UG 0 0 0 vmbr0 iptables -L Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination So I have a setup in which: - eth0 is my physical interface - it is bridged with vmbr0 with ip 195.218.152.219 and this address is accessible across the network - eth0.20 is a logical interface in VLAN 20 on eth0 - it is bridged with vmbr20 with ip 10.20.0.108 and this address IS NOT accessible across the network - vmbr0 bridge has an alias vmbr0:1 with ip 192.168.2.203 and this address is accessible across the network When I set up the network for testing: - eth0 as a physical interface 195.218.152.219 - eth0.20 as a VLAN interface 10.20.0.108 both addresses are accessible across the network (VLANs on the switch are set up correctly, VLAN 1 untagged, VLAN 20 tagged). Do you see an error in my configuration? Why is 10.20.0.108 not available? Best regards, Rafal.