diff --git a/sys/netinet/in_mcast.c b/sys/netinet/in_mcast.c
index b0d53b02ab54..31f2fe1ca4f6 100644
--- a/sys/netinet/in_mcast.c
+++ b/sys/netinet/in_mcast.c
@@ -1236,7 +1236,9 @@ in_leavegroup_locked(struct in_multi *inm, /*const*/ struct in_mfilter *imf)
 	KASSERT(error == 0, ("%s: failed to merge inm state", __func__));
 
 	CTR1(KTR_IGMPV3, "%s: doing igmp downcall", __func__);
+	CURVNET_SET(inm->inm_ifp->if_vnet);
 	error = igmp_change_state(inm);
+	CURVNET_RESTORE();
 	if (error)
 		CTR1(KTR_IGMPV3, "%s: failed igmp downcall", __func__);