Some time ago this was discussed here in the forum, and even though a PR was created to add this support, it was closed since it seems it was not properly fixing the issue. I did not find any further updates, maybe @pedronis has more context?
Is this a case you expect? Because I see the snap is only setting read access. In the meantime, I am +1 as well for auto-connect system-files with read access to /etc/traefik to traefik since the snap is the clear owner of such directory. We can update it to allow write access if needed. This is now live.
@ed10vi: could you please rename the iface reference to be etc-traefik instead of config to better represent the access being granted to this snap?
Thanks!