lib: change FRR interface name length definition

Use the OS provided maximum name length instead of defining an arbitrary
one.

Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/if.h b/lib/if.h
index 53cd019464..1c948b875a 100644
--- a/lib/if.h
+++ b/lib/if.h
@@ -103,7 +103,7 @@ enum zebra_link_type {
    #define IFNAMSIZ        16
 */
 
-#define INTERFACE_NAMSIZ      20
+#define INTERFACE_NAMSIZ      IFNAMSIZ
 #define INTERFACE_HWADDR_MAX  20
 
 typedef signed int ifindex_t;