diff --git a/common/status.c b/common/status.c
index 66a268d9c..9360ae928 100644
--- a/common/status.c
+++ b/common/status.c
@@ -36,6 +36,9 @@ static void setup_logging_sighandler(void)
 
 void status_setup_sync(int fd)
 {
+#if DEVELOPER
+	logging_io = (getenv("LIGHTNINGD_DEV_LOG_IO") != NULL);
+#endif
 	assert(status_fd == -1);
 	assert(!status_conn);
 	status_fd = fd;
@@ -44,6 +47,9 @@ void status_setup_sync(int fd)
 
 void status_setup_async(struct daemon_conn *master)
 {
+#if DEVELOPER
+	logging_io = (getenv("LIGHTNINGD_DEV_LOG_IO") != NULL);
+#endif
 	assert(status_fd == -1);
 	assert(!status_conn);
 	status_conn = master;
diff --git a/tests/utils.py b/tests/utils.py
index 3a6595a51..ec3524c15 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -684,7 +684,7 @@ class NodeFactory(object):
 
         return [j.result() for j in jobs]
 
-    def get_node(self, disconnect=None, options=None, may_fail=False, may_reconnect=False, random_hsm=False, feerates=(15000, 7500, 3750), start=True):
+    def get_node(self, disconnect=None, options=None, may_fail=False, may_reconnect=False, random_hsm=False, feerates=(15000, 7500, 3750), start=True, fake_bitcoin_cli=False, log_all_io=False):
         with self.lock:
             node_id = self.next_id
             self.next_id += 1
@@ -707,6 +707,10 @@ class NodeFactory(object):
             with open(daemon.disconnect_file, "w") as f:
                 f.write("\n".join(disconnect))
             daemon.opts["dev-disconnect"] = "dev_disconnect"
+        if log_all_io:
+            assert DEVELOPER
+            daemon.env["LIGHTNINGD_DEV_LOG_IO"] = "1"
+            daemon.opts["log-level"] = "io"
         if DEVELOPER:
             daemon.opts["dev-fail-on-subdaemon-fail"] = None
             daemon.env["LIGHTNINGD_DEV_MEMLEAK"] = "1"