Don't use a variable length buffer

diff --git a/dhcpcd.c b/dhcpcd.c
index 128726c0ee269eff2d014c057e40e16b3fb2793a..a16cc9d3bac97a6954b0dc55d98875218a37c348 100644 (file)
--- a/dhcpcd.c
+++ b/dhcpcd.c
@@ -757,7 +757,7 @@ handle_hwaddr(struct dhcpcd_ctx *ctx, const char *ifname,
     const uint8_t *hwaddr, size_t hwlen)
 {
        struct interface *ifp;
-       char buf[hwlen * 3];
+       char buf[sizeof(ifp->hwaddr) * 3];
 
        ifp = find_interface(ctx, ifname);
        if (ifp == NULL)