Apple USB Ethernet Adapter and VLAN??

Bought the Apple USB Ethernet Adapter today because my built in ethernetport on my MBP stopped working. What I know I need to replace the motherboard to have it fixed, so I thought the USB adapter could be useful until then.
But, it didn't work! I only got a "Self assigned ip-address". No matter what I do. I also entered an ip-address manually with no success.
Later at home I tested again, and Voila!! It worked perfectly!
Back at the office, same problem... I only get a "Self assigned ip-address"...
My conclusion of this is that the Apple USB Ethernet Adapter doesn't support VLAN?? Could anyone confirm that or better of, suggest a solution??
Would appreciate it a lot!
PS. Yes we do have Wi-Fi, but it's restricted and is not a solution for me. DS.

Create a new network location and try again.
https://discussions.apple.com/thread/2624518?threadID=2624518&tstart=45

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Hello All!
I'm having difficulty in getting my asix usb ethernet adapter to work with netctl.
# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: xxxxxxxxxxxxx
5: usbnet0: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN qlen 1000
link/ether 00:0e:c6:88:fd:a1 brd ff:ff:ff:ff:ff:ff
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Description='A basic static ethernet connection'
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journalctl output after running "netctl start usb"
Sep 30 15:07:14 faubourg systemd[1]: Starting A basic static ethernet connection...
Sep 30 15:07:15 faubourg network[3512]: Starting network profile 'usb'...
Sep 30 15:07:15 faubourg kernel: IPv6: ADDRCONF(NETDEV_UP): usbnet0: link is not ready
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Sep 30 15:07:20 faubourg systemd[1]: [email protected]: main process exited, code=exited, status=1/FAILURE
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Sep 30 15:07:20 faubourg systemd[1]: Unit [email protected] entered failed state.
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# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: xxxxxxxxxxxxx
6: usbnet0: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN qlen 1000
link/ether 00:0e:c6:88:fd:a1 brd ff:ff:ff:ff:ff:ff
inet 192.168.5.1/24 brd 192.168.5.255 scope global usbnet0
valid_lft forever preferred_lft forever
# ip link set dev usbnet0 up
faubourg netctl # ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: xxxxxxxxxxxxx
6: usbnet0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN qlen 1000
link/ether 00:0e:c6:88:fd:a1 brd ff:ff:ff:ff:ff:ff
inet 192.168.5.1/24 brd 192.168.5.255 scope global usbnet0
valid_lft forever preferred_lft forever
inet6 fe80::20e:c6ff:fe88:fda1/64 scope link
valid_lft forever preferred_lft forever
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# ethtool -s usbnet0 speed 100 duplex full
# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: xxxxxxxxxxxxx
6: usbnet0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0e:c6:88:fd:a1 brd ff:ff:ff:ff:ff:ff
inet 192.168.5.1/24 brd 192.168.5.255 scope global usbnet0
valid_lft forever preferred_lft forever
inet6 fe80::20e:c6ff:fe88:fda1/64 scope link
valid_lft forever preferred_lft forever
So my question is, how can I get netctl to do this for me automatically.

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Apple USB Ethernet Adapter and VLAN??

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