diff --git a/include/openbsc/abis_nm.h b/include/openbsc/abis_nm.h
index 1ed4cce..f1b0075 100644
--- a/include/openbsc/abis_nm.h
+++ b/include/openbsc/abis_nm.h
@@ -345,7 +345,7 @@
 	NM_ATT_IPACC_RSL_BSC_IP		= 0x80,
 	NM_ATT_IPACC_RSL_BSC_PORT	= 0x81,
 	NM_ATT_IPACC_LOCATION		= 0x8e,		/* string describing location */
-	NM_ATT_IPACC_UNIT_ID		= 0x91,
+	NM_ATT_IPACC_UNIT_ID		= 0x91,		/* Site/BTS/TRX */
 	NM_ATT_IPACC_UNIT_NAME		= 0x93,		/* default: nbts-<mac-as-string> */
 	NM_ATT_IPACC_PRIM_OML_IP	= 0x95,
 	NM_ATT_IPACC_SEC_OML_IP		= 0x96,
diff --git a/include/openbsc/e1_input.h b/include/openbsc/e1_input.h
index db565bf..8b9521d 100644
--- a/include/openbsc/e1_input.h
+++ b/include/openbsc/e1_input.h
@@ -2,6 +2,7 @@
 #define _E1_INPUT_H
 
 #include <stdlib.h>
+#include <netinet/in.h>
 
 #include <openbsc/linuxlist.h>
 #include <openbsc/gsm_data.h>
@@ -147,6 +148,7 @@
 /* e1_config.c */
 int e1_config(struct gsm_bts *bts, int cardnr, int release_l2);
 int ia_config(struct gsm_bts *bts);
+int ia_config_connect(struct gsm_bts *bts, struct sockaddr_in *sin);
 int ipaccess_setup(struct e1inp_line *line);
 
 struct llist_head e1inp_driver_list;