When querying the name server yeti-dns01.dnsworkshop.org / 2001:1608:10:167:32e::53 for "SOA ." (it is part of the Yeti root testbed), Exchange() returns a "bad rdata" error. dig, drill and kdig see nothing abnormal. Using Wireshark on the pcap, I did not find a problem either. Bug in the dns package?

Here is a test with q (in exdns):

% ./q @2001:1608:10:167:32e::53 SOA .    
;; dns: bad rdata