Let $G$ be a $p$-adic reductive group and $\pi$ an irreducible non-supercuspidal representation. Then there exist a parbaolic subgroup $P=MN$ and a supercuspidal representation of $M$ such that $\pi$ appears as a subrepresentation of $\operatorname{Ind}_P^G\sigma$, namely $\sigma$ is the supercuspidal support of $\pi$.
Now, is it known that $\pi$ appears with mupltiplicity one in $\operatorname{Ind}_P^G\sigma$?