diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index f7b29872db6c0b..d9bcb3b8d032cc 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -4528,6 +4528,8 @@ static const struct mlxsw_listener mlxsw_sp_listener[] = {
 	MLXSW_SP_RXL_MARK(IPV6_OSPF, TRAP_TO_CPU, OSPF, false),
 	MLXSW_SP_RXL_MARK(IPV6_DHCP, TRAP_TO_CPU, DHCP, false),
 	MLXSW_SP_RXL_MARK(RTR_INGRESS0, TRAP_TO_CPU, REMOTE_ROUTE, false),
+	MLXSW_SP_RXL_MARK(DISCARD_ROUTER3, TRAP_EXCEPTION_TO_CPU, REMOTE_ROUTE,
+			  false),
 	MLXSW_SP_RXL_MARK(IPV4_BGP, TRAP_TO_CPU, BGP, false),
 	MLXSW_SP_RXL_MARK(IPV6_BGP, TRAP_TO_CPU, BGP, false),
 	MLXSW_SP_RXL_MARK(L3_IPV6_ROUTER_SOLICITATION, TRAP_TO_CPU, IPV6_ND,
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
index 39c573b39faf01..1aa43605449004 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
@@ -77,6 +77,7 @@ struct mlxsw_sp_router {
 	struct notifier_block inet6addr_nb;
 	const struct mlxsw_sp_rif_ops **rif_ops_arr;
 	const struct mlxsw_sp_ipip_ops **ipip_ops_arr;
+	u32 adj_discard_index;
 };
 
 struct mlxsw_sp_rif {
@@ -4197,15 +4198,31 @@ mlxsw_sp_fib_entry_ralue_pack(char *ralue_pl,
 	}
 }
 
+static int mlxsw_sp_adj_discard_write(struct mlxsw_sp *mlxsw_sp, u16 rif_index)
+{
+	u32 adj_discard_index = mlxsw_sp->router->adj_discard_index;
+	enum mlxsw_reg_ratr_trap_action trap_action;
+	char ratr_pl[MLXSW_REG_RATR_LEN];
+
+	trap_action = MLXSW_REG_RATR_TRAP_ACTION_DISCARD_ERRORS;
+	mlxsw_reg_ratr_pack(ratr_pl, MLXSW_REG_RATR_OP_WRITE_WRITE_ENTRY, true,
+			    MLXSW_REG_RATR_TYPE_ETHERNET, adj_discard_index,
+			    rif_index);
+	mlxsw_reg_ratr_trap_action_set(ratr_pl, trap_action);
+	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ratr), ratr_pl);
+}
+
 static int mlxsw_sp_fib_entry_op_remote(struct mlxsw_sp *mlxsw_sp,
 					struct mlxsw_sp_fib_entry *fib_entry,
 					enum mlxsw_reg_ralue_op op)
 {
+	struct mlxsw_sp_nexthop_group *nh_group = fib_entry->nh_group;
 	char ralue_pl[MLXSW_REG_RALUE_LEN];
 	enum mlxsw_reg_ralue_trap_action trap_action;
 	u16 trap_id = 0;
 	u32 adjacency_index = 0;
 	u16 ecmp_size = 0;
+	int err;
 
 	/* In case the nexthop group adjacency index is valid, use it
 	 * with provided ECMP size. Otherwise, setup trap and pass
@@ -4215,6 +4232,15 @@ static int mlxsw_sp_fib_entry_op_remote(struct mlxsw_sp *mlxsw_sp,
 		trap_action = MLXSW_REG_RALUE_TRAP_ACTION_NOP;
 		adjacency_index = fib_entry->nh_group->adj_index;
 		ecmp_size = fib_entry->nh_group->ecmp_size;
+	} else if (!nh_group->adj_index_valid && nh_group->count &&
+		   nh_group->nh_rif) {
+		err = mlxsw_sp_adj_discard_write(mlxsw_sp,
+						 nh_group->nh_rif->rif_index);
+		if (err)
+			return err;
+		trap_action = MLXSW_REG_RALUE_TRAP_ACTION_NOP;
+		adjacency_index = mlxsw_sp->router->adj_discard_index;
+		ecmp_size = 1;
 	} else {
 		trap_action = MLXSW_REG_RALUE_TRAP_ACTION_TRAP;
 		trap_id = MLXSW_TRAP_ID_RTR_INGRESS0;
@@ -8144,6 +8170,11 @@ int mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp,
 	if (err)
 		goto err_neigh_init;
 
+	err = mlxsw_sp_kvdl_alloc(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_ADJ, 1,
+				  &router->adj_discard_index);
+	if (err)
+		goto err_adj_discard_index_alloc;
+
 	mlxsw_sp->router->netevent_nb.notifier_call =
 		mlxsw_sp_router_netevent_event;
 	err = register_netevent_notifier(&mlxsw_sp->router->netevent_nb);
@@ -8172,6 +8203,9 @@ int mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp,
 err_mp_hash_init:
 	unregister_netevent_notifier(&mlxsw_sp->router->netevent_nb);
 err_register_netevent_notifier:
+	mlxsw_sp_kvdl_free(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_ADJ, 1,
+			   router->adj_discard_index);
+err_adj_discard_index_alloc:
 	mlxsw_sp_neigh_fini(mlxsw_sp);
 err_neigh_init:
 	mlxsw_sp_vrs_fini(mlxsw_sp);
@@ -8203,6 +8237,8 @@ void mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp)
 	unregister_fib_notifier(mlxsw_sp_net(mlxsw_sp),
 				&mlxsw_sp->router->fib_nb);
 	unregister_netevent_notifier(&mlxsw_sp->router->netevent_nb);
+	mlxsw_sp_kvdl_free(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_ADJ, 1,
+			   mlxsw_sp->router->adj_discard_index);
 	mlxsw_sp_neigh_fini(mlxsw_sp);
 	mlxsw_sp_vrs_fini(mlxsw_sp);
 	mlxsw_sp_mr_fini(mlxsw_sp);
diff --git a/drivers/net/ethernet/mellanox/mlxsw/trap.h b/drivers/net/ethernet/mellanox/mlxsw/trap.h
index b7d83c67491fbd..b84b7f07dce208 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/trap.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/trap.h
@@ -68,6 +68,7 @@ enum {
 	MLXSW_TRAP_ID_ROUTER_ALERT_IPV4 = 0xD6,
 	MLXSW_TRAP_ID_ROUTER_ALERT_IPV6 = 0xD7,
 	MLXSW_TRAP_ID_DISCARD_ROUTER2 = 0x130,
+	MLXSW_TRAP_ID_DISCARD_ROUTER3 = 0x131,
 	MLXSW_TRAP_ID_DISCARD_ING_PACKET_SMAC_MC = 0x140,
 	MLXSW_TRAP_ID_DISCARD_ING_SWITCH_VTAG_ALLOW = 0x148,
 	MLXSW_TRAP_ID_DISCARD_ING_SWITCH_VLAN = 0x149,