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-rw-r--r--zebra/interface.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/zebra/interface.h b/zebra/interface.h
index a925dcc962..ab1a245e5e 100644
--- a/zebra/interface.h
+++ b/zebra/interface.h
@@ -491,8 +491,8 @@ extern bool if_nhg_dependents_is_empty(const struct interface *ifp);
extern void vrf_add_update(struct vrf *vrfp);
extern void zebra_l2_map_slave_to_bond(struct zebra_if *zif, vrf_id_t vrf);
extern void zebra_l2_unmap_slave_from_bond(struct zebra_if *zif);
-extern char *zebra_protodown_rc_str(enum protodown_reasons protodown_rc,
- char *pd_buf, uint32_t pd_buf_len);
+extern const char *zebra_protodown_rc_str(enum protodown_reasons protodown_rc,
+ char *pd_buf, uint32_t pd_buf_len);
#ifdef HAVE_PROC_NET_DEV
extern void ifstat_update_proc(void);