--- a/ecm_interface.c
+++ b/ecm_interface.c
@@ -3606,7 +3606,7 @@ identifier_update:
 		if (skb && (skb->skb_iif == dev->ifindex)) {
 			struct pppol2tp_common_addr info;

-			if (__ppp_is_multilink(dev) > 0) {
+			if (ppp_is_multilink(dev) > 0) {
 				DEBUG_TRACE("%px: Net device: %px is MULTILINK PPP - Unknown to the ECM\n", feci, dev);
 				type_info.unknown.os_specific_ident = dev_interface_num;

@@ -3616,7 +3616,7 @@ identifier_update:
 				ii = ecm_interface_unknown_interface_establish(&type_info.unknown, dev_name, dev_interface_num, ae_interface_num, dev_mtu);
 				return ii;
 			}
-			channel_count = __ppp_hold_channels(dev, ppp_chan, 1);
+			channel_count = ppp_hold_channels(dev, ppp_chan, 1);
 			if (channel_count != 1) {
 				DEBUG_TRACE("%px: Net device: %px PPP has %d channels - ECM cannot handle this (interface becomes Unknown type)\n",
 					    feci, dev, channel_count);