diff --git a/lib/linux/constants.rb b/lib/linux/constants.rb
index 8c28a54..7c432f6 100644
--- a/lib/linux/constants.rb
+++ b/lib/linux/constants.rb
@@ -310,24 +310,27 @@ module Linux
   VLAN_FLAG_MVRP          = 0x8
 
   # from linux/if_addr.h
-  IFA_UNSPEC		= 0
-  IFA_ADDRESS		= 1
-  IFA_LOCAL		= 2
-  IFA_LABEL		= 3
-  IFA_BROADCAST		= 4
-  IFA_ANYCAST		= 5
-  IFA_CACHEINFO		= 6
-  IFA_MULTICAST		= 7
+  IFA_UNSPEC      = 0
+  IFA_ADDRESS     = 1
+  IFA_LOCAL       = 2
+  IFA_LABEL       = 3
+  IFA_BROADCAST   = 4
+  IFA_ANYCAST     = 5
+  IFA_CACHEINFO   = 6
+  IFA_MULTICAST   = 7
+  IFA_FLAGS       = 8
 
-  IFA_F_SECONDARY	= 0x01
-  IFA_F_TEMPORARY	= IFA_F_SECONDARY
-  IFA_F_NODAD		= 0x02
-  IFA_F_OPTIMISTIC	= 0x04
-  IFA_F_DADFAILED	= 0x08
-  IFA_F_HOMEADDRESS	= 0x10
-  IFA_F_DEPRECATED	= 0x20
-  IFA_F_TENTATIVE	= 0x40
-  IFA_F_PERMANENT	= 0x80
+  IFA_F_SECONDARY      = 0x01
+  IFA_F_TEMPORARY      = IFA_F_SECONDARY
+  IFA_F_NODAD          = 0x02
+  IFA_F_OPTIMISTIC     = 0x04
+  IFA_F_DADFAILED      = 0x08
+  IFA_F_HOMEADDRESS    = 0x10
+  IFA_F_DEPRECATED     = 0x20
+  IFA_F_TENTATIVE      = 0x40
+  IFA_F_PERMANENT      = 0x80
+  IFA_F_MANAGETEMPADDR = 0x100
+  IFA_F_NOPREFIXROUTE  = 0x200
 
   # from linux/if_arp.h - selected subset
   ARPHRD_NETROM		= 0
diff --git a/lib/linux/netlink/route/addr_handler.rb b/lib/linux/netlink/route/addr_handler.rb
index 1e4c393..b3bb422 100644
--- a/lib/linux/netlink/route/addr_handler.rb
+++ b/lib/linux/netlink/route/addr_handler.rb
@@ -24,6 +24,10 @@ module Netlink
         :pack   => lambda { |val,obj| val.to_a.pack("L*") },
         :unpack => lambda { |str,obj| IFACacheInfo.new(*(str.unpack("L*"))) }
     rtattr :multicast, IFA_MULTICAST, :l3addr
+
+    # TODO: is there any difference between flags and ifa_flags? The latter only
+    # shows up on newer kernels
+    rtattr :ifa_flags, IFA_FLAGS, :uint
   end
 
   module Route