osu.edu/TXT: 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. See RFC 6891, Sec. 6.2.6. (2610:a8:2004::2, 2610:a8:2006::2, UDP_-_EDNS0_4096_D_K)