CoreOS bare-metal vlan networking

Put something like this (adjusted for your nic) in your cloud-config file:

- name: 00-vlan1.netdev
  runtime: true
  content: |
    [NetDev]
    Name=vlan1
    Kind=vlan

    [VLAN]
    Id=1
- name: 00-vlan2.netdev
  runtime: true
  content: |
    [NetDev]
    Name=vlan2
    Kind=vlan

    [VLAN]
    Id=2
- name: 30-ens192.network
  runtime: true
  content: |
    [Match]
    Name=ens192

    [Network]
    DHCP=yes
    VLAN=vlan1
    VLAN=vlan2

This information come from two sources: the manpages for systemd-networkd and the coreos blog https://coreos.com/blog/intro-to-systemd-networkd

I tried this on one of my own systems since I also will need vlans soon. Works very well. Here is the result:

core@localhost ~ $ 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: ens192: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:0c:29:48:9e:49 brd ff:ff:ff:ff:ff:ff
    inet 10.9.8.123/24 brd 10.9.8.255 scope global dynamic ens192
       valid_lft 3200sec preferred_lft 3200sec
    inet6 fe80::20c:29ff:fe48:9e49/64 scope link 
       valid_lft forever preferred_lft forever
3: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN 
    link/ether 56:84:7a:fe:97:99 brd ff:ff:ff:ff:ff:ff
    inet 172.17.42.1/16 scope global docker0
       valid_lft forever preferred_lft forever
4: vlan1@ens192: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP 
    link/ether 42:cf:24:c7:c6:bd brd ff:ff:ff:ff:ff:ff
    inet6 fe80::40cf:24ff:fec7:c6bd/64 scope link 
       valid_lft forever preferred_lft forever
5: vlan2@ens192: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP 
    link/ether da:0d:c5:73:91:1d brd ff:ff:ff:ff:ff:ff
    inet6 fe80::d80d:c5ff:fe73:911d/64 scope link 
       valid_lft forever preferred_lft forever
core@localhost ~ $

CoreOS bare-metal vlan networking

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