Hi,
Thank you for your response.
You are absolutely right. The thread is already 5 years old.
However, the tool would still run into the same problem as zffmount without classic support: what I want to show is that zffmount is potentially not the only tool with this problem. 
zffmount is neither supported nor unsupported in the classic categorization. 
However, the following is listed under “Criteria”:
“access to resources not yet supported by snapd and where the requirement is clearly understood to be supportable by snapd. This may result in temporarily granting classic until snapd supports the use case in strict mode”
(Yes, I read the note underneath…which doesn’t rule it in or out 
)
Therefore, I would like to ask for a time limited exception, so that a review can take place again after an implementation of a fuse-control interface or something like that is done, which has the appropriate abilities…? 
I would also prefer to see my tool in strict confiment, I can definitely see the security advantages here - but at the moment it is not feasible due to the lack of a suitable interface.
thanks,
ph0llux