revert commit #481: we actually still need that stupid usleep() to reliably bootstrap nanoBTS :(

diff --git a/src/input/ipaccess.c b/src/input/ipaccess.c
index ad32259..ea7f847 100644
--- a/src/input/ipaccess.c
+++ b/src/input/ipaccess.c
@@ -365,6 +365,7 @@
 
 	ret = send(bfd->fd, msg->data, msg->len, 0);
 	msgb_free(msg);
+	usleep(100000);
 
 	return ret;
 }