From 203414910fc07786821a11067b0397d3d3544707 Mon Sep 17 00:00:00 2001
From: Grant Limberg <grant.limberg@zerotier.com>
Date: Mon, 8 Jul 2019 12:33:26 -0700
Subject: [PATCH] Give up to a second for the interface to appear to assign IP
 addresses

---
 osdep/LinuxNetLink.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/osdep/LinuxNetLink.cpp b/osdep/LinuxNetLink.cpp
index 6645a8565..a276b4073 100644
--- a/osdep/LinuxNetLink.cpp
+++ b/osdep/LinuxNetLink.cpp
@@ -850,6 +850,10 @@ void LinuxNetLink::addAddress(const InetAddress &addr, const char *iface)
 #endif
 
 	int interface_index = _indexForInterface(iface);
+	for (int reps = 0; interface_index == -1 && reps < 10; ++reps) {
+		Thread::sleep(100);
+		interface_index == _indexForInterface(iface);
+	}
 
 	if (interface_index == -1) {
 		fprintf(stderr, "Unable to find index for interface %s\n", iface);