id,summary,reporter,owner,description,type,status,component,version,resolution,keywords,cc,guest,host 5349,traffic get answered on the wrong VLAN,erik,,"debian running in 3.0.10 virtualbox on windows, stacked vlan configured on eth2.400.4[[BR]] second debian running in 3.0.10 virtualbox on windows, stacked vlan configured on eth2.400.4[[BR]] you will notice on the tcpdump trace that requests are received in VLAN 400/VLAN4 (this is QinQ) but the response is sent on VLAN 4 which is not even configured on the box. tcpdump [[BR]] tcpdump -i eth2[[BR]] tcpdump: verbose output suppressed, use -v or -vv for full protocol decode[[BR]] listening on eth2, link-type EN10MB (Ethernet), capture size 96 bytes[[BR]] 15:33:47.584076 vlan 400, p 0, vlan 4, p 0, arp who-has 10.0.1.1 tell 10.0.1.2[[BR]] 15:33:47.614299 vlan 4, p 0, arp reply 10.0.1.1 is-at 08:00:27:f2:cd:a5 (oui Unknown)[[BR]] 15:33:48.566620 vlan 400, p 0, vlan 4, p 0, arp who-has 10.0.1.1 tell 10.0.1.2[[BR]] 15:33:48.566983 vlan 4, p 0, arp reply 10.0.1.1 is-at 08:00:27:f2:cd:a5 (oui Unknown)[[BR]] 15:33:49.549445 vlan 400, p 0, vlan 4, p 0, arp who-has 10.0.1.1 tell 10.0.1.2[[BR]] [[BR]] [[BR]] setup:[[BR]] apt-get install vlan[[BR]] modprobe 8021q[[BR]] vconfig add eth3 400[[BR]] ifconfig eth3.400 up[[BR]] vconfig add eth3.400 4[[BR]] ifconfig eth3.400.4 up[[BR]] ",defect,new,network,VirtualBox 3.0.10,,,,Linux,Windows