From 266c401164b8647647d4c78fbe4d0a92bdd95ef3 Mon Sep 17 00:00:00 2001
From: Brad Parker <bparker@reach3d.net>
Date: Wed, 30 Oct 2013 20:26:07 -0400
Subject: [PATCH] revert /sys/class/net hack and just resync the cache to find
 any new devices that have appeared

---
 interface.cpp | 15 ++++-----------
 1 file changed, 4 insertions(+), 11 deletions(-)

diff --git a/interface.cpp b/interface.cpp
index 56c9ea9..bcee13b 100644
--- a/interface.cpp
+++ b/interface.cpp
@@ -483,6 +483,10 @@ QStringList Interface::list() {
     return QStringList();
   }
 
+  // fixes libnl "issue": https://github.com/tgraf/libnl/issues/49
+  // the cache is apparently global to the kernel and must be resynced if a hotplug device goes away and comes back
+  nl_cache_resync(sock, link_cache, NULL, NULL);
+
   int index = 1;
 
   forever {
@@ -504,17 +508,6 @@ QStringList Interface::list() {
   nl_cache_free(link_cache);
   nl_socket_free(sock);
 
-  // workaround for libnl issue: https://github.com/tgraf/libnl/issues/49
-  // find any interfaces libnl doesn't know about (e.g. USB wireless adapters after they're been unplugged and replugged)
-  QDir dir("/sys/class/net");
-  QStringList interfaces = dir.entryList(QDir::Dirs | QDir::NoDotAndDotDot);
-
-  foreach(QString interface, interfaces) {
-    if(!linkList.contains(interface)) {
-      linkList << interface;
-    }
-  }
-
   return linkList;
 }