Guppies.
I don't think Jundullah is the reason for Iranian threats to Pakistan.
childish analysis.
iran and pakistan are intertwined in this, both BLA and jundullah hve signatures of US/israeli/indian support and both are headache for iran and pakistani establishment.
goal of BLA and Jundullah is to have united balochistan by joining iranian sestan province and pakistani balochistan province..
there may be some issues with between iranian and pakistanis but both are sharing info and have same goal to kill jundullah and BLA.