From the nix manual:
> A configuration setting usually overrides any previous value. However,
> for settings that take a list of items, you can prefix the name of the
> setting by extra- to append to the previous value.
Reviewed-by: Rodrigo Arias Mallo <rodrigo.arias@bsc.es>
For owl1 and owl2 directly connect to hut via LAN with HTTP, but for
raccoon pass via the proxy using jungle.bsc.es with HTTPS. There is no
risk of tampering as packages are signed.
Reviewed-by: Rodrigo Arias Mallo <rodrigo.arias@bsc.es>