On 15/06/2016 12:31, Harshith Mulky wrote: > How can I enable EDNS on the bind server? > > > Will just enabling this > > edns-udp-size size_in_bytes ; > > set the EDNS on the bind server? > > > Or is EDNS Client specfic feature? EDNS is always enabled on a BIND 9.9 server, but it's only permitted (per the RFCs) if the client sent an OPT RR in the request. Ray