1. DNS Alphabet Soup

2. IPv6 Increases packet size Both transport and question/answer sections Preference: goes first Fragmentation done by end points (ICMPv6!)

3. DNSSEC Created to add security to server answers Needs chain of trust (from root, now signed) Manual periodic updates by server operator (zone owner, and recursive as well) Significant increase in packet size

4. EDNS Added size of DNS packets TCP transport Fragmentation may be needed – caution Ipv6 Real servers need to support it (not your home router) Latency issue – especially for mobile operator

5. IDN домены.на.другом.языке Confusion by user and operator possible Variant IDNs coming – more confusion?

6. Conclusion Challenges: DNS in new ISP service If it works, your customers happy as before If not, they look elsewhere Technology keeps changing – be aware

7. Contacts Dmitry Kohmanyuk http://kohmanyuk.tel/ dk@hostmaster.ua