diff --git a/sys/net/if.c b/sys/net/if.c
index fe51ba5a0b6..edc7d8376bb 100644
--- a/sys/net/if.c
+++ b/sys/net/if.c
@@ -834,6 +834,7 @@ if_attach_internal(struct ifnet *ifp, bool vmove)
 	MPASS(ifindex_table[ifp->if_index].ife_ifnet == ifp);
 
 #ifdef VIMAGE
+	CURVNET_ASSERT_SET();
 	ifp->if_vnet = curvnet;
 	if (ifp->if_home_vnet == NULL)
 		ifp->if_home_vnet = curvnet;