diff --git a/libc-test/build.rs b/libc-test/build.rs
index b9905e046f7b1..167d857794853 100644
--- a/libc-test/build.rs
+++ b/libc-test/build.rs
@@ -3776,6 +3776,7 @@ fn test_linux(target: &str) {
         "netinet/ip.h",
         "netinet/tcp.h",
         "netinet/udp.h",
+        (gnu, "netiucv/iucv.h"),
         (l4re, "netpacket/packet.h"),
         "poll.h",
         "pthread.h",
diff --git a/src/unix/linux_like/linux/gnu/b64/mod.rs b/src/unix/linux_like/linux/gnu/b64/mod.rs
index 3d442a6d8129d..73564c8c0823b 100644
--- a/src/unix/linux_like/linux/gnu/b64/mod.rs
+++ b/src/unix/linux_like/linux/gnu/b64/mod.rs
@@ -98,6 +98,17 @@ s! {
         __glibc_reserved4: Padding<crate::__syscall_ulong_t>,
     }
 
+    // net/iucv/iucv.h
+
+    pub struct sockaddr_iucv {
+        pub siucv_family: crate::sa_family_t,
+        pub siucv_port: crate::in_port_t,
+        pub siucv_addr: crate::in_addr_t,
+        pub siucv_nodeid: [c_char; 8],
+        pub siucv_user_id: [c_char; 8],
+        pub siucv_name: [c_char; 8],
+    }
+
     pub struct timex {
         pub modes: c_uint,
         #[cfg(all(target_arch = "x86_64", target_pointer_width = "32"))]