id summary reporter owner description type status component version resolution keywords cc guest host 11804 Guests on OSX 10.8.3 hosts bridged tagged-vlan interface only see arp & udp traffic ( no tcp ) feralandabberrant "I have a few OS X 10.8.3 machines ( 2x MacBookPro + 1xMacPro ) running VirtualBox 4.2.12 r84980. The host has access to 3 networks via en0. Untagged vlan 10 & tagged vlan 20 & 30. I've created two virtual interfaces off of the tagged vlans ( vlan0 = 20 & vlan1 = 30 ). When I set a guests network access to 'bridged' on vlan0 or vlan1 - they guest is able to get an IP, and see the dhcp settings - but unable to connect to any of the other devices off of the host. Guests can ping other devices on the host - and the host, if the host has an ip on that network - but not the dhcp server, the gateway or the dns servers. TCP dump on the guests shows ARP & UDP traffic - but not TCP. Guests tested include: - Windows 7 Ultimate 64bit - Windows 8 Pro 64bit - Debian wheezy 64bit - Ubuntu ( BT5r3 ) 32bit - OS X 10.8.3 64bit - OS X 10.6.3 32bit - OpenBSD 5.3 64bit All available NIC combinations were tried ( except on the OSX guests - they're a bit princess like ) " defect closed network VirtualBox 4.2.12 obsolete OSX VLAN BRIDGED TAGGED 802.1q all Mac OS X