Hello, currently I have installed a Ubuntu Server 14.04 Guest. Already configured VLAN interface: ifconfig shows this: eth0 Link encap:Ethernet HWaddr 00:1c:42:ac:6c:d3 inet addr:192.168.50.3 Bcast:192.168.50.255 Mask:255.255.255.0 inet6 addr: fe80::21c:42ff:feac:6cd3/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:948 errors:0 dropped:0 overruns:0 frame:0 TX packets:102 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:233761 (233.7 KB) TX bytes:11643 (11.6 KB) 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:65536 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) vlan100 Link encap:Ethernet HWaddr 00:1c:42:ac:6c:d3 inet addr:192.168.100.3 Bcast:192.168.100.255 Mask:255.255.255.0 inet6 addr: fe80::21c:42ff:feac:6cd3/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:8 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 B) TX bytes:648 (648.0 B) iptables seem also to be not affecting: iptables -nvL Chain INPUT (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination Switchport is configured => OK LAN Router is configured => OK I use a bridged network Interface with Parallels mapped to Ethernet. I also could reach the IP-address which is associated with en0. Further I configured a VLAN interface on my MAC (VLAN 100). My problem is that I couldn't reach the IP-address associated to the vlan100 interface on the UBUNTU Server. Basic network setup seem to be OK, because I could reach another host which is part of the VLAN with VID100. I have no more ideas what to do or how to configure the settings for the GuestOS or change things in the GuestOS itself. In the Parallels manual I found a hint that it should be possible to attach GuestOS to a VLAN, but this was mentioned in case of Windows. I expect that there is something to change in the Guest OS config meaning change Ubuntu settings or in the config of the GuestOS environment meaning Parallels settings. All info and hint are highly appreciated and welcome! Greeting from Germany Bernd