Probably yeah, also could you please 'ls -la /dev/diag'?
$ ls -la /dev/diag crw-rw---- 1 system qcom_diag 243, 0 2015-08-14 09:44 /dev/diag
PS I'm asking since SnoopSnitch on Android uses it, so I'm just asking if Jolla enables it - waiting for J2