diff --git a/lib/linux/constants.rb b/lib/linux/constants.rb
index 84b9c4c..263e74c 100644
--- a/lib/linux/constants.rb
+++ b/lib/linux/constants.rb
@@ -236,6 +236,8 @@ module Linux
   IFLA_AF_SPEC    = 26
   IFLA_GROUP      = 27
   IFLA_NET_NS_FD  = 28
+  IFLA_EXT_MASK   = 29 
+  IFLA_PROMISCUITY = 30
 
   IFLA_INFO_UNSPEC	= 0
   IFLA_INFO_KIND	= 1	# "vlan", "gre" etc
diff --git a/lib/linux/netlink/route/link_handler.rb b/lib/linux/netlink/route/link_handler.rb
index dd65fe2..aac7ed7 100644
--- a/lib/linux/netlink/route/link_handler.rb
+++ b/lib/linux/netlink/route/link_handler.rb
@@ -63,7 +63,9 @@ module Netlink
     rtattr :af_spec, IFLA_AF_SPEC
     rtattr :group, IFLA_GROUP
     rtattr :net_ns_fd, IFLA_NET_NS_FD
-    
+    rtattr :ext_mask, IFLA_EXT_MASK   
+    rtattr :promiscuity, IFLA_PROMISCUITY
+ 
     # Return the best stats available (64bit or 32bit)
     def stats
       stats64 || stats32