Today i was playing around with ethernet adapters and vlans in Alpine Linux. I tried to give the interfaces arbitrary names.
After looking at the source i had the following example working
Ethernet adapter named lan01 configured as DHCP client and a VLAN on this adapter named lan-test on VLAN ID 100
My /etc/network/interfaces:
auto lo
iface lo inet loopback
auto lan01
iface lan01 inet dhcp
hostname alpine
auto lan-test
iface lan-test inet static
vlan-id 100
vlan-raw-device lan01
address 10.10.0.1
netmask 255.255.255.0
ifup and ifdown in Alpine Linux uses busybox.
Nowhere in any documentation i found the option vlan-id. However the vlan-raw-device is found in most documentation/man pages.
So this brings me to the question: Why is this option not documented anywhere?
Some of my guesses:
- It is old and deprecated thus should not be used anymore
- It is new and untested.
- It never got documented properly
- I just overlooked it many many times in the documentation
Quick dig do you have a Mellanox card ?
https://github.com/alpinelinux/linux-stable-grsec/blob/d9a468ffb147fe3a5ebd305ff1e1bdb7fe3ac452/drivers/net/ethernet/mellanox/mlx4/mcg.c#L923