DHCP: Fill chaddr if hwlen really is 16 bytes

This isn't normally a problem as ethernet is 6 bytes in length.
Spotted by Steve Noonan.

diff --git a/src/dhcp.c b/src/dhcp.c
index bfd4012739da8bdc5045139315ee60e710126364..2f221bc71d9d6059975340f7a3d6b5be60ec6597 100644 (file)
--- a/src/dhcp.c
+++ b/src/dhcp.c
@@ -782,7 +782,7 @@ make_message(struct bootp **bootpm, const struct interface *ifp, uint8_t type)
 
        bootp->op = BOOTREQUEST;
        bootp->htype = (uint8_t)ifp->hwtype;
-       if (ifp->hwlen != 0 && ifp->hwlen < sizeof(bootp->chaddr)) {
+       if (ifp->hwlen != 0 && ifp->hwlen <= sizeof(bootp->chaddr)) {
                bootp->hlen = (uint8_t)ifp->hwlen;
                memcpy(&bootp->chaddr, &ifp->hwaddr, ifp->hwlen);
        }