Updates for this application are forced, since the app itself checks for a newer version of the title(this is done before any actual HTTP requests by the actual application are done). This is done with
Friend_Services: the application tries to authenticate itself with FRDU. When the installed version is outdated, it gets an error-code in the output buffer for
FRDU:GetGameAuthenticationData(this error-code then gets passed to the error-display applet).
The friend HTTP requests which are involved with the above use HTTPS, so blocking it (probably) isn't an option(the usual POST request(s) to
https://nasc.nintendowifi.net/ac).