Comment 3 for bug 1685490

Thanks Blake, that worked for the boot-server option but not for
sip-servers.

If the error message also pointed to documentation on how to add options
using a global snippet, then this would be clear for users. Or better,
when someone tries to add an unsupported option, prompt them to add the
global option directly, with a link to the relevant docs. Would you
update this bug accordingly?

Finally, we need to attach these snippets to the object they apply to,
not have them as a dangling collection of things that each need names :)

Mark