diff -Nur asterisk-14.5.0/channels/chan_iax2.c asterisk-14.5.0-patched/channels/chan_iax2.c
--- asterisk-14.5.0/channels/chan_iax2.c	2017-05-31 03:50:46.000000000 +1000
+++ asterisk-14.5.0-patched/channels/chan_iax2.c	2018-02-19 09:26:18.332446692 +1000
@@ -12562,6 +12562,7 @@
 
 static void *network_thread(void *ignore)
 {
+    int res;
 	if (timer) {
 		ast_io_add(io, ast_timer_fd(timer), timing_read, AST_IO_IN | AST_IO_PRI, NULL);
 	}
@@ -12571,9 +12572,12 @@
 		/* Wake up once a second just in case SIGURG was sent while
 		 * we weren't in poll(), to make sure we don't hang when trying
 		 * to unload. */
-		if (ast_io_wait(io, 1000) <= 0) {
-			break;
-		}
+		res = ast_io_wait(io, 1000);
+        /* Timeout(=0), and EINTR is not a thread exit condition. We do
+         * not want to exit the thread loop on these conditions. */
+        if (res < 0  && res != -EINTR)
+        {
+		    ast_log(LOG_ERROR, "Thread exit =%s \n", strerror(errno));
+            break;
+        }
 	}
 
 	return NULL;