diff --git a/libc/kernel/uapi/linux/ip.h b/libc/kernel/uapi/linux/ip.h
index b6aef50..766a808 100644
--- a/libc/kernel/uapi/linux/ip.h
+++ b/libc/kernel/uapi/linux/ip.h
@@ -86,8 +86,9 @@
   __u8 ttl;
   __u8 protocol;
   __sum16 check;
-  __be32 saddr;
+  __struct_group(, addrs,, __be32 saddr;
   __be32 daddr;
+ );
 };
 struct ip_auth_hdr {
   __u8 nexthdr;