Sad news
Unless Cisco has changed dramatically since I was stuck with working with their products, this simply means that OpenDNS will deteriorate, becoming bug-ridden and insecure. But I'm very out of date on Cisco, as the only Cisco products I have any experience of (apart from firewalls) have been products shipped more than 13 years ago, because twelve and a half years ago I started suggesting putting non-Cicso switches in customer proposals and a decade or more ago I recommended to my employer that no Cisco switch or BBSM should ever again be included in any proposal to any customer and the suggestion was welcomed with open arms as Cisco products were definitely causing problems.