I have a router on the end of a 802.1q trunk port that I'd like to
netboot for install, but this is only possible if I can PXE boot using
the correct VLAN to reach the PXE server. Some PXE boot ROMs support
this (mine does not currently) and I was going to try it from a booted
bsd.rd on the host, but looks like I only have options for physical
interfaces to select from on an Autoinstall:

Welcome to the OpenBSD/amd64 5.8 installation program.
(I)nstall, (U)pgrade, (A)utoinstall or (S)hell? a
Available network interfaces are: re0 re1 re2 athn0.
Which network interface should be used for the initial DHCP request?
(or 'done') [re0]
DHCPDISCOVER on re0 - interval 3
DHCPDISCOVER on re0 - interval 5
DHCPDISCOVER on re0 - interval 13
DHCPDISCOVER on re0 - interval 19
DHCPDISCOVER on re0 - interval 13
DHCPDISCOVER on re0 - interval 8
No acceptable DHCPOFFERS received.
No working leases in persistent database - sleeping.
Could not determine next-server.
Could not determine auto mode.
Response file location?

With additional work I may be able to switch around network
configurations to support a native VLAN (and then reconfigure
post-install) but this isn't ideal. Is it feasible for the autoinstall
support to handle the same VLAN features for booting as is available
later in the installation for network configuration?

  Which network interface do you wish to configure = vlan0
  Which interface:tag should vlan0 be on = re0:100
  IPv4 address for vlan0 = 10.0.1.1
  Netmask for vlan0 = 255.255.255.0

-- 
Darren Spruell
[email protected]

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