diff --git a/route/defs_freebsd.go b/route/defs_freebsd.go
index a131894..863e4ea 100644
--- a/route/defs_freebsd.go
+++ b/route/defs_freebsd.go
@@ -227,12 +227,6 @@
 	sizeofIfMsghdrFreeBSD10 = C.sizeof_struct_if_msghdr_freebsd10
 	sizeofIfMsghdrFreeBSD11 = C.sizeof_struct_if_msghdr_freebsd11
 
-	sizeofIfDataFreeBSD7  = C.sizeof_struct_if_data_freebsd7
-	sizeofIfDataFreeBSD8  = C.sizeof_struct_if_data_freebsd8
-	sizeofIfDataFreeBSD9  = C.sizeof_struct_if_data_freebsd9
-	sizeofIfDataFreeBSD10 = C.sizeof_struct_if_data_freebsd10
-	sizeofIfDataFreeBSD11 = C.sizeof_struct_if_data_freebsd11
-
 	sizeofRtMsghdrFreeBSD10Emu  = C.sizeof_struct_rt_msghdr
 	sizeofRtMetricsFreeBSD10Emu = C.sizeof_struct_rt_metrics
 
@@ -241,14 +235,4 @@
 	sizeofIfMsghdrFreeBSD9Emu  = C.sizeof_struct_if_msghdr_freebsd9
 	sizeofIfMsghdrFreeBSD10Emu = C.sizeof_struct_if_msghdr_freebsd10
 	sizeofIfMsghdrFreeBSD11Emu = C.sizeof_struct_if_msghdr_freebsd11
-
-	sizeofIfDataFreeBSD7Emu  = C.sizeof_struct_if_data_freebsd7
-	sizeofIfDataFreeBSD8Emu  = C.sizeof_struct_if_data_freebsd8
-	sizeofIfDataFreeBSD9Emu  = C.sizeof_struct_if_data_freebsd9
-	sizeofIfDataFreeBSD10Emu = C.sizeof_struct_if_data_freebsd10
-	sizeofIfDataFreeBSD11Emu = C.sizeof_struct_if_data_freebsd11
-
-	sizeofSockaddrStorage = C.sizeof_struct_sockaddr_storage
-	sizeofSockaddrInet    = C.sizeof_struct_sockaddr_in
-	sizeofSockaddrInet6   = C.sizeof_struct_sockaddr_in6
 )
diff --git a/route/zsys_freebsd_386.go b/route/zsys_freebsd_386.go
index 37b5c7b..a4a6d29 100644
--- a/route/zsys_freebsd_386.go
+++ b/route/zsys_freebsd_386.go
@@ -13,12 +13,6 @@
 	sizeofIfMsghdrFreeBSD10 = 0x64
 	sizeofIfMsghdrFreeBSD11 = 0xa8
 
-	sizeofIfDataFreeBSD7  = 0x50
-	sizeofIfDataFreeBSD8  = 0x50
-	sizeofIfDataFreeBSD9  = 0x50
-	sizeofIfDataFreeBSD10 = 0x54
-	sizeofIfDataFreeBSD11 = 0x98
-
 	// MODIFIED BY HAND FOR 386 EMULATION ON AMD64
 	// 386 EMULATION USES THE UNDERLYING RAW DATA LAYOUT
 
@@ -30,14 +24,4 @@
 	sizeofIfMsghdrFreeBSD9Emu  = 0xa8
 	sizeofIfMsghdrFreeBSD10Emu = 0xa8
 	sizeofIfMsghdrFreeBSD11Emu = 0xa8
-
-	sizeofIfDataFreeBSD7Emu  = 0x98
-	sizeofIfDataFreeBSD8Emu  = 0x98
-	sizeofIfDataFreeBSD9Emu  = 0x98
-	sizeofIfDataFreeBSD10Emu = 0x98
-	sizeofIfDataFreeBSD11Emu = 0x98
-
-	sizeofSockaddrStorage = 0x80
-	sizeofSockaddrInet    = 0x10
-	sizeofSockaddrInet6   = 0x1c
 )
diff --git a/route/zsys_freebsd_amd64.go b/route/zsys_freebsd_amd64.go
index 2f6cf35..d563b86 100644
--- a/route/zsys_freebsd_amd64.go
+++ b/route/zsys_freebsd_amd64.go
@@ -13,12 +13,6 @@
 	sizeofIfMsghdrFreeBSD10 = 0xa8
 	sizeofIfMsghdrFreeBSD11 = 0xa8
 
-	sizeofIfDataFreeBSD7  = 0x98
-	sizeofIfDataFreeBSD8  = 0x98
-	sizeofIfDataFreeBSD9  = 0x98
-	sizeofIfDataFreeBSD10 = 0x98
-	sizeofIfDataFreeBSD11 = 0x98
-
 	sizeofRtMsghdrFreeBSD10Emu  = 0x98
 	sizeofRtMetricsFreeBSD10Emu = 0x70
 
@@ -27,14 +21,4 @@
 	sizeofIfMsghdrFreeBSD9Emu  = 0xa8
 	sizeofIfMsghdrFreeBSD10Emu = 0xa8
 	sizeofIfMsghdrFreeBSD11Emu = 0xa8
-
-	sizeofIfDataFreeBSD7Emu  = 0x98
-	sizeofIfDataFreeBSD8Emu  = 0x98
-	sizeofIfDataFreeBSD9Emu  = 0x98
-	sizeofIfDataFreeBSD10Emu = 0x98
-	sizeofIfDataFreeBSD11Emu = 0x98
-
-	sizeofSockaddrStorage = 0x80
-	sizeofSockaddrInet    = 0x10
-	sizeofSockaddrInet6   = 0x1c
 )
diff --git a/route/zsys_freebsd_arm.go b/route/zsys_freebsd_arm.go
index b6b90d5..c7f9bbb 100644
--- a/route/zsys_freebsd_arm.go
+++ b/route/zsys_freebsd_arm.go
@@ -13,12 +13,6 @@
 	sizeofIfMsghdrFreeBSD10 = 0x70
 	sizeofIfMsghdrFreeBSD11 = 0xa8
 
-	sizeofIfDataFreeBSD7  = 0x60
-	sizeofIfDataFreeBSD8  = 0x60
-	sizeofIfDataFreeBSD9  = 0x60
-	sizeofIfDataFreeBSD10 = 0x60
-	sizeofIfDataFreeBSD11 = 0x98
-
 	sizeofRtMsghdrFreeBSD10Emu  = 0x5c
 	sizeofRtMetricsFreeBSD10Emu = 0x38
 
@@ -27,14 +21,4 @@
 	sizeofIfMsghdrFreeBSD9Emu  = 0x70
 	sizeofIfMsghdrFreeBSD10Emu = 0x70
 	sizeofIfMsghdrFreeBSD11Emu = 0xa8
-
-	sizeofIfDataFreeBSD7Emu  = 0x60
-	sizeofIfDataFreeBSD8Emu  = 0x60
-	sizeofIfDataFreeBSD9Emu  = 0x60
-	sizeofIfDataFreeBSD10Emu = 0x60
-	sizeofIfDataFreeBSD11Emu = 0x98
-
-	sizeofSockaddrStorage = 0x80
-	sizeofSockaddrInet    = 0x10
-	sizeofSockaddrInet6   = 0x1c
 )
diff --git a/route/zsys_freebsd_arm64.go b/route/zsys_freebsd_arm64.go
index 2f6cf35..d563b86 100644
--- a/route/zsys_freebsd_arm64.go
+++ b/route/zsys_freebsd_arm64.go
@@ -13,12 +13,6 @@
 	sizeofIfMsghdrFreeBSD10 = 0xa8
 	sizeofIfMsghdrFreeBSD11 = 0xa8
 
-	sizeofIfDataFreeBSD7  = 0x98
-	sizeofIfDataFreeBSD8  = 0x98
-	sizeofIfDataFreeBSD9  = 0x98
-	sizeofIfDataFreeBSD10 = 0x98
-	sizeofIfDataFreeBSD11 = 0x98
-
 	sizeofRtMsghdrFreeBSD10Emu  = 0x98
 	sizeofRtMetricsFreeBSD10Emu = 0x70
 
@@ -27,14 +21,4 @@
 	sizeofIfMsghdrFreeBSD9Emu  = 0xa8
 	sizeofIfMsghdrFreeBSD10Emu = 0xa8
 	sizeofIfMsghdrFreeBSD11Emu = 0xa8
-
-	sizeofIfDataFreeBSD7Emu  = 0x98
-	sizeofIfDataFreeBSD8Emu  = 0x98
-	sizeofIfDataFreeBSD9Emu  = 0x98
-	sizeofIfDataFreeBSD10Emu = 0x98
-	sizeofIfDataFreeBSD11Emu = 0x98
-
-	sizeofSockaddrStorage = 0x80
-	sizeofSockaddrInet    = 0x10
-	sizeofSockaddrInet6   = 0x1c
 )
diff --git a/route/zsys_freebsd_riscv64.go b/route/zsys_freebsd_riscv64.go
index 2f6cf35..d563b86 100644
--- a/route/zsys_freebsd_riscv64.go
+++ b/route/zsys_freebsd_riscv64.go
@@ -13,12 +13,6 @@
 	sizeofIfMsghdrFreeBSD10 = 0xa8
 	sizeofIfMsghdrFreeBSD11 = 0xa8
 
-	sizeofIfDataFreeBSD7  = 0x98
-	sizeofIfDataFreeBSD8  = 0x98
-	sizeofIfDataFreeBSD9  = 0x98
-	sizeofIfDataFreeBSD10 = 0x98
-	sizeofIfDataFreeBSD11 = 0x98
-
 	sizeofRtMsghdrFreeBSD10Emu  = 0x98
 	sizeofRtMetricsFreeBSD10Emu = 0x70
 
@@ -27,14 +21,4 @@
 	sizeofIfMsghdrFreeBSD9Emu  = 0xa8
 	sizeofIfMsghdrFreeBSD10Emu = 0xa8
 	sizeofIfMsghdrFreeBSD11Emu = 0xa8
-
-	sizeofIfDataFreeBSD7Emu  = 0x98
-	sizeofIfDataFreeBSD8Emu  = 0x98
-	sizeofIfDataFreeBSD9Emu  = 0x98
-	sizeofIfDataFreeBSD10Emu = 0x98
-	sizeofIfDataFreeBSD11Emu = 0x98
-
-	sizeofSockaddrStorage = 0x80
-	sizeofSockaddrInet    = 0x10
-	sizeofSockaddrInet6   = 0x1c
 )