154     int optlen;  in decode_dhcp_msg()  local
177         optlen = *x++;  in decode_dhcp_msg()
179         if (optlen > len) {  in decode_dhcp_msg()
184             if (optlen >= 4) {  in decode_dhcp_msg()
191             if (optlen >= 4) memcpy(&info->gateway, x, 4);  in decode_dhcp_msg()
194             if (optlen >= 4) memcpy(&info->dns1, x + 0, 4);  in decode_dhcp_msg()
195             if (optlen >= 8) memcpy(&info->dns2, x + 4, 4);  in decode_dhcp_msg()
198             if (optlen >= 4) {  in decode_dhcp_msg()
204             if (optlen >= 4) memcpy(&info->serveraddr, x, 4);  in decode_dhcp_msg()
212         x += optlen;  in decode_dhcp_msg()
213         len -= optlen;  in decode_dhcp_msg()