http://dnsviz.net/d/gn/dnssec/ whines
gn/DS (alg 8, id 38486): No response was received until the UDP
payload size was decreased, indicating that the server might be
attempting to send a payload that exceeds the path maximum
transmission unit (PMTU) size. (2001:500:12::d0d,
UDP_0_EDNS0_32768_4096)
randy