diff --git a/lif/defs_solaris.go b/lif/defs_solaris.go
index 695119e..d76f6a6 100644
--- a/lif/defs_solaris.go
+++ b/lif/defs_solaris.go
@@ -52,24 +52,6 @@
 )
 
 const (
-	sysIFF_UP          = C.IFF_UP
-	sysIFF_BROADCAST   = C.IFF_BROADCAST
-	sysIFF_DEBUG       = C.IFF_DEBUG
-	sysIFF_LOOPBACK    = C.IFF_LOOPBACK
-	sysIFF_POINTOPOINT = C.IFF_POINTOPOINT
-	sysIFF_NOTRAILERS  = C.IFF_NOTRAILERS
-	sysIFF_RUNNING     = C.IFF_RUNNING
-	sysIFF_NOARP       = C.IFF_NOARP
-	sysIFF_PROMISC     = C.IFF_PROMISC
-	sysIFF_ALLMULTI    = C.IFF_ALLMULTI
-	sysIFF_INTELLIGENT = C.IFF_INTELLIGENT
-	sysIFF_MULTICAST   = C.IFF_MULTICAST
-	sysIFF_MULTI_BCAST = C.IFF_MULTI_BCAST
-	sysIFF_UNNUMBERED  = C.IFF_UNNUMBERED
-	sysIFF_PRIVATE     = C.IFF_PRIVATE
-)
-
-const (
 	sizeofLifnum       = C.sizeof_struct_lifnum
 	sizeofLifreq       = C.sizeof_struct_lifreq
 	sizeofLifconf      = C.sizeof_struct_lifconf
diff --git a/lif/zsys_solaris_amd64.go b/lif/zsys_solaris_amd64.go
index d7a70d4..6e7c982 100644
--- a/lif/zsys_solaris_amd64.go
+++ b/lif/zsys_solaris_amd64.go
@@ -41,24 +41,6 @@
 )
 
 const (
-	sysIFF_UP          = 0x1
-	sysIFF_BROADCAST   = 0x2
-	sysIFF_DEBUG       = 0x4
-	sysIFF_LOOPBACK    = 0x8
-	sysIFF_POINTOPOINT = 0x10
-	sysIFF_NOTRAILERS  = 0x20
-	sysIFF_RUNNING     = 0x40
-	sysIFF_NOARP       = 0x80
-	sysIFF_PROMISC     = 0x100
-	sysIFF_ALLMULTI    = 0x200
-	sysIFF_INTELLIGENT = 0x400
-	sysIFF_MULTICAST   = 0x800
-	sysIFF_MULTI_BCAST = 0x1000
-	sysIFF_UNNUMBERED  = 0x2000
-	sysIFF_PRIVATE     = 0x8000
-)
-
-const (
 	sizeofLifnum       = 0xc
 	sizeofLifreq       = 0x178
 	sizeofLifconf      = 0x18