struct ortentry and struct ifalias req are actually not defined
struct arpreq is defined, but can not be passed to an ioctl on the Hurd.

---
 ioctls.h |    6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/sysdeps/mach/hurd/bits/ioctls.h b/sysdeps/mach/hurd/bits/ioctls.h
index 8718aac..10dd4ff 100644
--- a/sysdeps/mach/hurd/bits/ioctls.h
+++ b/sysdeps/mach/hurd/bits/ioctls.h
@@ -260,8 +271,10 @@ enum __ioctl_datum { IOC_8, IOC_16, IOC_32, IOC_64 };
 #define	SIOCSPGRP	_IOW('s',  8, int)		/* set process group */
 #define	SIOCGPGRP	_IOR('s',  9, int)		/* get process group */
 
+#if 0
 #define	SIOCADDRT	_IOW('r', 10, struct ortentry)	/* add route */
 #define	SIOCDELRT	_IOW('r', 11, struct ortentry)	/* delete route */
+#endif
 
 #define	SIOCSIFADDR	_IOW('i', 12, struct ifreq)	/* set ifnet address */
 #define	OSIOCGIFADDR	_IOWR('i',13, struct ifreq)	/* get ifnet address */
@@ -283,12 +296,16 @@ enum __ioctl_datum { IOC_8, IOC_16, IOC_32, IOC_64 };
 #define	SIOCGIFMETRIC	_IOWR('i',23, struct ifreq_int)	/* get IF metric */
 #define	SIOCSIFMETRIC	_IOW('i',24, struct ifreq_int)	/* set IF metric */
 #define	SIOCDIFADDR	_IOW('i',25, struct ifreq)	/* delete IF addr */
+#if 0
 #define	SIOCAIFADDR	_IOW('i',26, struct ifaliasreq)	/* add/chg IF alias */
+#endif
 
+#if 0
 #define	SIOCSARP	_IOW('i', 30, struct arpreq)	/* set arp entry */
 #define	OSIOCGARP	_IOWR('i',31, struct arpreq)	/* get arp entry */
 #define	SIOCGARP	_IOWR('i',38, struct arpreq)	/* get arp entry */
 #define	SIOCDARP	_IOW('i', 32, struct arpreq)	/* delete arp entry */
+#endif
 
 #define SIOCGIFMTU	_IOWR('i', 51, struct ifreq_int)/* get IF mtu */
 #define SIOCSIFMTU	_IOW('i', 52, struct ifreq_int)	/* set IF mtu */