dhcpcd-discuss

Hi Mike

On 19/10/2017 23:45, Mike McCabe wrote:
> Thanks for testing!  I'm still able to reproduce the issue, stock 
> raspbian jessie lite works vs. raspbian stretch lite doesn't... in each 
> case with option vium-env lines added to dhcpcd.conf
>
>
>
> $ dhcpcd -V4 | grep vium
> 239 vium-env                                     string
>
> $ dhcpcd -U4 eth0 | grep vium
> domain_name='vium.com <http://vium.com>'
> < no vium-env >

I've been so blind!
It's not a dhcpcd bug per se, but the shell you're using.
dhcpcd just sets env vars as given, however, it makes no attempt to 
sanitize them instead leaving it up to whatever the hook uses.
In this case it's /bin/sh.
I'm guessing there has been an upgrade there which stops - being used in 
environment vars. You aren't allowed - in shell variables, and you use 
shell variables to extract env vars.

Try changing from vium-env to vium_env and you'll find this working 
should be working.
I had to test this on a Debian derivative box to actually track this one 
down.

Roy