diff --git a/sys/net/if.c b/sys/net/if.c
--- a/sys/net/if.c
+++ b/sys/net/if.c
@@ -1235,6 +1235,22 @@
 #ifdef VIMAGE
 finish_vnet_shutdown:
 #endif
+	/*
+	 * Objects associated with this ifnet have been deregistered from
+	 * tables/lists here, but other threads may still reference the
+	 * objects (e.g. nhop_objects). We need to clear ifp->if_afdata[]
+	 * after the refereces are finished because other threads may access
+	 * the contents of ifp->if_afdata[] in such references
+	 * (in6_selecthlim() for example).
+	 * Those references are (and should be) guarded by the net_epoch
+	 * so we can wait for the end of the reference with
+	 * epoch_wait_preempt() and NET_EPOCH_DRAIN_CALLBACKS().
+	 * After these calls, objects assosiated with this ifnet are
+	 * not kept referenced or will not be fetched because they are
+	 * deregistered from tables/lists.
+	 */
+	NET_EPOCH_WAIT();
+	NET_EPOCH_DRAIN_CALLBACKS();
 	/*
 	 * We cannot hold the lock over dom_ifdetach calls as they might
 	 * sleep, for example trying to drain a callout, thus open up the