From: "Andrey V. Elsukov" <a...@freebsd.org>

It is lightweight way to check if an IPv4 address exists.

Submitted by:   Roy Marples
Reviewed by:    gnn, melifaro
MFC after:      2 weeks
Differential Revision:  https://reviews.freebsd.org/D26636
---
 newlib/libc/sys/rtems/include/sys/sockio.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/newlib/libc/sys/rtems/include/sys/sockio.h 
b/newlib/libc/sys/rtems/include/sys/sockio.h
index 03502d770..93b8af28e 100644
--- a/newlib/libc/sys/rtems/include/sys/sockio.h
+++ b/newlib/libc/sys/rtems/include/sys/sockio.h
@@ -84,6 +84,7 @@
 #define        SIOCGIFDESCR    _IOWR('i', 42, struct ifreq)    /* get ifnet 
descr */ 
 #define        SIOCAIFADDR      _IOW('i', 43, struct ifaliasreq)/* add/chg IF 
alias */
 #define        SIOCGIFDATA      _IOW('i', 44, struct ifreq)    /* get if_data 
*/
+#define        SIOCGIFALIAS    _IOWR('i', 45, struct ifaliasreq)/* get IF 
alias */
 
 #define        SIOCADDMULTI     _IOW('i', 49, struct ifreq)    /* add m'cast 
addr */
 #define        SIOCDELMULTI     _IOW('i', 50, struct ifreq)    /* del m'cast 
addr */
-- 
2.35.3

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