lb/SOA: No response was received from the server over UDP (tried 6 times) until the COOKIE EDNS option was removed (however, this server appeared to respond legitimately to other queries with the COOKIE EDNS option present). See RFC 6891, Sec. 6.1.2. (147.28.0.39, 2001:418:1::39, UDP_-_EDNS0_4096_D_KN)