diff --git a/libc-test/build.rs b/libc-test/build.rs
index 48fb4df08e8e9..2f7c469d7cf6a 100644
--- a/libc-test/build.rs
+++ b/libc-test/build.rs
@@ -299,6 +299,9 @@ fn test_apple(target: &str) {
     }
 
     cfg.skip_struct(move |ty| {
+        if ty.starts_with("__c_anonymous_") {
+            return true;
+        }
         match ty {
             // FIXME: actually a union
             "sigval" => true,
@@ -310,8 +313,13 @@ fn test_apple(target: &str) {
         }
     });
 
-    cfg.skip_type(move |ty| match ty {
-        _ => false,
+    cfg.skip_type(move |ty| {
+        if ty.starts_with("__c_anonymous_") {
+            return true;
+        }
+        match ty {
+            _ => false,
+        }
     });
 
     cfg.skip_const(move |name| {
@@ -364,6 +372,8 @@ fn test_apple(target: &str) {
             ("__darwin_arm_neon_state64", "__v") => true,
             // MAXPATHLEN is too big for auto-derive traits on arrays.
             ("vnode_info_path", "vip_path") => true,
+            ("ifreq", "ifr_ifru") => true,
+            ("ifkpi", "ifk_data") => true,
             _ => false,
         }
     });
diff --git a/libc-test/semver/apple.txt b/libc-test/semver/apple.txt
index d70ce6fc24749..98dcc4d4cdf1e 100644
--- a/libc-test/semver/apple.txt
+++ b/libc-test/semver/apple.txt
@@ -1957,6 +1957,8 @@ if_freenameindex
 if_msghdr
 if_nameindex
 ifaddrs
+ifkpi
+ifreq
 image_offset
 in6_pktinfo
 in_pktinfo
diff --git a/src/unix/bsd/apple/mod.rs b/src/unix/bsd/apple/mod.rs
index b22b40ef9b374..ecd434175c03b 100644
--- a/src/unix/bsd/apple/mod.rs
+++ b/src/unix/bsd/apple/mod.rs
@@ -797,7 +797,7 @@ s! {
     pub struct sockaddr_ndrv {
         pub snd_len: ::c_uchar,
         pub snd_family: ::c_uchar,
-        pub snd_name: [::c_uchar; 16]      // IFNAMSIZ from if.h
+        pub snd_name: [::c_uchar; ::IFNAMSIZ],
     }
 
     // sys/socket.h
@@ -1419,6 +1419,52 @@ s_no_extra_traits! {
         pub svm_port: ::c_uint,
         pub svm_cid: ::c_uint,
     }
+
+    pub struct ifdevmtu {
+        pub ifdm_current: ::c_int,
+        pub ifdm_min: ::c_int,
+        pub ifdm_max: ::c_int,
+    }
+
+    #[cfg(libc_union)]
+    pub union __c_anonymous_ifk_data {
+        pub ifk_ptr: *mut ::c_void,
+        pub ifk_value: ::c_int,
+    }
+
+    #[cfg_attr(libc_packedN, repr(packed(4)))]
+    pub struct ifkpi {
+        pub ifk_module_id: ::c_uint,
+        pub ifk_type: ::c_uint,
+        #[cfg(libc_union)]
+        pub ifk_data: __c_anonymous_ifk_data,
+    }
+
+    #[cfg(libc_union)]
+    pub union __c_anonymous_ifr_ifru {
+        pub ifru_addr: ::sockaddr,
+        pub ifru_dstaddr: ::sockaddr,
+        pub ifru_broadaddr: ::sockaddr,
+        pub ifru_flags: ::c_short,
+        pub ifru_metrics: ::c_int,
+        pub ifru_mtu: ::c_int,
+        pub ifru_phys: ::c_int,
+        pub ifru_media: ::c_int,
+        pub ifru_intval: ::c_int,
+        pub ifru_data: *mut ::c_char,
+        pub ifru_devmtu: ifdevmtu,
+        pub ifru_kpi: ifkpi,
+        pub ifru_wake_flags: u32,
+        pub ifru_route_refcnt: u32,
+        pub ifru_cap: [::c_int; 2],
+        pub ifru_functional_type: u32,
+    }
+
+    pub struct ifreq {
+        pub ifr_name: [::c_char; ::IFNAMSIZ],
+        #[cfg(libc_union)]
+        pub ifr_ifru: __c_anonymous_ifr_ifru,
+    }
 }
 
 impl siginfo_t {
@@ -2767,6 +2813,190 @@ cfg_if! {
                 svm_cid.hash(state);
             }
         }
+
+        impl PartialEq for ifdevmtu {
+            fn eq(&self, other: &ifdevmtu) -> bool {
+                self.ifdm_current == other.ifdm_current
+                    && self.ifdm_min == other.ifdm_min
+                    && self.ifdm_max == other.ifdm_max
+            }
+        }
+
+        impl Eq for ifdevmtu {}
+
+        impl ::fmt::Debug for ifdevmtu {
+            fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
+                f.debug_struct("ifdevmtu")
+                    .field("ifdm_current", &self.ifdm_current)
+                    .field("ifdm_min", &self.ifdm_min)
+                    .field("ifdm_max", &self.ifdm_max)
+                    .finish()
+            }
+        }
+
+        impl ::hash::Hash for ifdevmtu {
+            fn hash<H: ::hash::Hasher>(&self, state: &mut H) {
+                self.ifdm_current.hash(state);
+                self.ifdm_min.hash(state);
+                self.ifdm_max.hash(state);
+            }
+        }
+
+        #[cfg(libc_union)]
+        impl PartialEq for __c_anonymous_ifk_data {
+            fn eq(&self, other: &__c_anonymous_ifk_data) -> bool {
+                unsafe {
+                    self.ifk_ptr == other.ifk_ptr
+                        && self.ifk_value == other.ifk_value
+                }
+            }
+        }
+
+        #[cfg(libc_union)]
+        impl Eq for __c_anonymous_ifk_data {}
+
+        #[cfg(libc_union)]
+        impl ::fmt::Debug for __c_anonymous_ifk_data {
+            fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
+                f.debug_struct("__c_anonymous_ifk_data")
+                    .field("ifk_ptr", unsafe { &self.ifk_ptr })
+                    .field("ifk_value", unsafe { &self.ifk_value })
+                    .finish()
+            }
+        }
+        #[cfg(libc_union)]
+        impl ::hash::Hash for __c_anonymous_ifk_data {
+            fn hash<H: ::hash::Hasher>(&self, state: &mut H) {
+                unsafe {
+                    self.ifk_ptr.hash(state);
+                    self.ifk_value.hash(state);
+                }
+            }
+        }
+
+        impl PartialEq for ifkpi {
+            fn eq(&self, other: &ifkpi) -> bool {
+                self.ifk_module_id == other.ifk_module_id
+                    && self.ifk_type == other.ifk_type
+            }
+        }
+
+        impl Eq for ifkpi {}
+
+        impl ::fmt::Debug for ifkpi {
+            fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
+                f.debug_struct("ifkpi")
+                    .field("ifk_module_id", &self.ifk_module_id)
+                    .field("ifk_type", &self.ifk_type)
+                    .finish()
+            }
+        }
+
+        impl ::hash::Hash for ifkpi {
+            fn hash<H: ::hash::Hasher>(&self, state: &mut H) {
+                self.ifk_module_id.hash(state);
+                self.ifk_type.hash(state);
+            }
+        }
+
+        #[cfg(libc_union)]
+        impl PartialEq for __c_anonymous_ifr_ifru {
+            fn eq(&self, other: &__c_anonymous_ifr_ifru) -> bool {
+                unsafe {
+                    self.ifru_addr == other.ifru_addr
+                        && self.ifru_dstaddr == other.ifru_dstaddr
+                        && self.ifru_broadaddr == other.ifru_broadaddr
+                        && self.ifru_flags == other.ifru_flags
+                        && self.ifru_metrics == other.ifru_metrics
+                        && self.ifru_mtu == other.ifru_mtu
+                        && self.ifru_phys == other.ifru_phys
+                        && self.ifru_media == other.ifru_media
+                        && self.ifru_intval == other.ifru_intval
+                        && self.ifru_data == other.ifru_data
+                        && self.ifru_devmtu == other.ifru_devmtu
+                        && self.ifru_kpi == other.ifru_kpi
+                        && self.ifru_wake_flags == other.ifru_wake_flags
+                        && self.ifru_route_refcnt == other.ifru_route_refcnt
+                        && self.ifru_cap.iter().zip(other.ifru_cap.iter()).all(|(a,b)| a == b)
+                        && self.ifru_functional_type == other.ifru_functional_type
+                }
+            }
+        }
+
+        #[cfg(libc_union)]
+        impl Eq for __c_anonymous_ifr_ifru {}
+
+        #[cfg(libc_union)]
+        impl ::fmt::Debug for __c_anonymous_ifr_ifru {
+            fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
+                f.debug_struct("__c_anonymous_ifr_ifru")
+                    .field("ifru_addr", unsafe { &self.ifru_addr })
+                    .field("ifru_dstaddr", unsafe { &self.ifru_dstaddr })
+                    .field("ifru_broadaddr", unsafe { &self.ifru_broadaddr })
+                    .field("ifru_flags", unsafe { &self.ifru_flags })
+                    .field("ifru_metrics", unsafe { &self.ifru_metrics })
+                    .field("ifru_mtu", unsafe { &self.ifru_mtu })
+                    .field("ifru_phys", unsafe { &self.ifru_phys })
+                    .field("ifru_media", unsafe { &self.ifru_media })
+                    .field("ifru_intval", unsafe { &self.ifru_intval })
+                    .field("ifru_data", unsafe { &self.ifru_data })
+                    .field("ifru_devmtu", unsafe { &self.ifru_devmtu })
+                    .field("ifru_kpi", unsafe { &self.ifru_kpi })
+                    .field("ifru_wake_flags", unsafe { &self.ifru_wake_flags })
+                    .field("ifru_route_refcnt", unsafe { &self.ifru_route_refcnt })
+                    .field("ifru_cap", unsafe { &self.ifru_cap })
+                    .field("ifru_functional_type", unsafe { &self.ifru_functional_type })
+                    .finish()
+            }
+        }
+
+        #[cfg(libc_union)]
+        impl ::hash::Hash for __c_anonymous_ifr_ifru {
+            fn hash<H: ::hash::Hasher>(&self, state: &mut H) {
+                unsafe {
+                    self.ifru_addr.hash(state);
+                    self.ifru_dstaddr.hash(state);
+                    self.ifru_broadaddr.hash(state);
+                    self.ifru_flags.hash(state);
+                    self.ifru_metrics.hash(state);
+                    self.ifru_mtu.hash(state);
+                    self.ifru_phys.hash(state);
+                    self.ifru_media.hash(state);
+                    self.ifru_intval.hash(state);
+                    self.ifru_data.hash(state);
+                    self.ifru_devmtu.hash(state);
+                    self.ifru_kpi.hash(state);
+                    self.ifru_wake_flags.hash(state);
+                    self.ifru_route_refcnt.hash(state);
+                    self.ifru_cap.hash(state);
+                    self.ifru_functional_type.hash(state);
+                }
+            }
+        }
+
+        impl PartialEq for ifreq {
+            fn eq(&self, other: &ifreq) -> bool {
+                self.ifr_name == other.ifr_name
+            }
+        }
+
+        impl Eq for ifreq {}
+
+        impl ::fmt::Debug for ifreq {
+            fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
+                f.debug_struct("ifreq")
+                    .field("ifr_name", &self.ifr_name)
+                    .finish()
+            }
+        }
+
+        impl ::hash::Hash for ifreq {
+            fn hash<H: ::hash::Hasher>(&self, state: &mut H) {
+                self.ifr_name.hash(state);
+                #[cfg(libc_union)]
+                self.ifr_ifru.hash(state);
+            }
+        }
     }
 }