diff --git a/openair2/UTIL/ASYNC_IF/link_manager.c b/openair2/UTIL/ASYNC_IF/link_manager.c
index 9e636ea1e27a6f5c20d1465f71d1816f9d69f0ea..7486fbd1710caa630a1d625111d96853a9ec19d8 100644
--- a/openair2/UTIL/ASYNC_IF/link_manager.c
+++ b/openair2/UTIL/ASYNC_IF/link_manager.c
@@ -97,7 +97,7 @@ link_manager_t *create_link_manager(
         message_queue_t *receive_queue,
         socket_link_t   *link,
 	uint16_t        type,
-        char            *peer_addr,
+        const char      *peer_addr,
         int             port      )
 {
   link_manager_t *ret = NULL;
diff --git a/openair2/UTIL/ASYNC_IF/link_manager.h b/openair2/UTIL/ASYNC_IF/link_manager.h
index 391458e088155e9e47e6070799510eac9fa2c5d3..f7efc928676fafadd92335b61fb2ffb845505448 100644
--- a/openair2/UTIL/ASYNC_IF/link_manager.h
+++ b/openair2/UTIL/ASYNC_IF/link_manager.h
@@ -58,7 +58,7 @@ link_manager_t *create_link_manager(
         message_queue_t *receive_queue,
         socket_link_t   *link,
 	uint16_t        type,
-        char            *peer_addr,
+        const char      *peer_addr,
         int             port);
 
 void destroy_link_manager(link_manager_t *);
diff --git a/openair2/UTIL/ASYNC_IF/socket_link.c b/openair2/UTIL/ASYNC_IF/socket_link.c
index 8f06ed15ff5b5ba2d1b9d2fa48c6f3a75ac086ef..e7100a2797cfa4eb8ff5984775bd5fb8ddc86252 100644
--- a/openair2/UTIL/ASYNC_IF/socket_link.c
+++ b/openair2/UTIL/ASYNC_IF/socket_link.c
@@ -115,7 +115,7 @@ error:
   return NULL;
 }
 
-socket_link_t *new_link_client(char *server, int port)
+socket_link_t *new_link_client(const char *server, int port)
 {
   socket_link_t      *ret = NULL;
   struct sockaddr_in addr;
@@ -208,7 +208,7 @@ error:
 }
 
 
-socket_link_t *new_link_udp_client(char *server, int port){
+socket_link_t *new_link_udp_client(const char *server, int port){
 
   socket_link_t      *ret = NULL;
   ret = calloc(1, sizeof(socket_link_t));
@@ -307,7 +307,7 @@ error:
   return NULL;
 }
 
-socket_link_t *new_link_sctp_client(char *server, int port)
+socket_link_t *new_link_sctp_client(const char *server, int port)
 {
 
   socket_link_t      *ret = NULL;
diff --git a/openair2/UTIL/ASYNC_IF/socket_link.h b/openair2/UTIL/ASYNC_IF/socket_link.h
index c2cf3d3c105ce25e1955a8e43a4e2b10e4718aa7..1ce5c27424a67b8f01feb5412a43ce57bab5a483 100644
--- a/openair2/UTIL/ASYNC_IF/socket_link.h
+++ b/openair2/UTIL/ASYNC_IF/socket_link.h
@@ -47,11 +47,11 @@ typedef struct {
 } socket_link_t;
 
 socket_link_t *new_link_server(int port);
-socket_link_t *new_link_client(char *server, int port);
+socket_link_t *new_link_client(const char *server, int port);
 socket_link_t *new_link_udp_server(int port);
-socket_link_t *new_link_udp_client(char *server, int port);
+socket_link_t *new_link_udp_client(const char *server, int port);
 socket_link_t *new_link_sctp_server(int port);
-socket_link_t *new_link_sctp_client(char *server, int port);
+socket_link_t *new_link_sctp_client(const char *server, int port);
 int link_send_packet(socket_link_t *link, void *data, int size, uint16_t proto_type, char *peer_addr, int port);
 int link_receive_packet(socket_link_t *link, void **data, int *size, uint16_t proto_type, char *peer_addr, int port);
 int close_link(socket_link_t *link);