correct some ioctl request values

src/unix/notbsd/mod.rs

@@ -854,9 +854,9 @@ pub const SIOCGIFSLAVE: ::c_ulong = 0x00008929;
 pub const SIOCSIFSLAVE: ::c_ulong = 0x00008930;
 pub const SIOCADDMULTI: ::c_ulong = 0x00008931;
 pub const SIOCDELMULTI: ::c_ulong = 0x00008932;
-pub const SIOCDARP: ::c_ulong = 0x00008950;
-pub const SIOCGARP: ::c_ulong = 0x00008951;
-pub const SIOCSARP: ::c_ulong = 0x00008952;
+pub const SIOCDARP: ::c_ulong = 0x00008953;
+pub const SIOCGARP: ::c_ulong = 0x00008954;
+pub const SIOCSARP: ::c_ulong = 0x00008955;
 pub const SIOCDRARP: ::c_ulong = 0x00008960;
 pub const SIOCGRARP: ::c_ulong = 0x00008961;
 pub const SIOCSRARP: ::c_ulong = 0x00008962;