- int mtu = odhcpd_get_interface_config(iface->ifname, "mtu");
- int hlim = odhcpd_get_interface_config(iface->ifname, "hop_limit");
+ uint32_t mtu = iface->ra_mtu;
+ int hlim = iface->ra_hoplimit;
+
+ if (mtu == 0)
+ mtu = odhcpd_get_interface_config(iface->ifname, "mtu");