diff --git a/unix/linux/types.go b/unix/linux/types.go
index c400c031..41081f2d 100644
--- a/unix/linux/types.go
+++ b/unix/linux/types.go
@@ -115,6 +115,7 @@ struct termios2 {
 #include <linux/netfilter/nf_tables_compat.h>
 #include <linux/netfilter/nfnetlink.h>
 #include <linux/netfilter.h>
+#include <linux/netfilter_ipv4.h>
 #include <linux/netlink.h>
 #include <linux/nexthop.h>
 #include <linux/nfc.h>
@@ -1767,6 +1768,8 @@ const (
 	NFPROTO_NUMPROTO = C.NFPROTO_NUMPROTO
 )
 
+const SO_ORIGINAL_DST = C.SO_ORIGINAL_DST
+
 // netfilter nfnetlink
 type Nfgenmsg C.struct_nfgenmsg
 
diff --git a/unix/ztypes_linux.go b/unix/ztypes_linux.go
index 72887abe..c9d7eb41 100644
--- a/unix/ztypes_linux.go
+++ b/unix/ztypes_linux.go
@@ -1773,6 +1773,8 @@ const (
 	NFPROTO_NUMPROTO = 0xd
 )
 
+const SO_ORIGINAL_DST = 0x50
+
 type Nfgenmsg struct {
 	Nfgen_family uint8
 	Version      uint8