That makes it sound like any UDP packets larger than the MTU will silently be dropped, which isn't the case.

A lot of firewalls don't pass fragments nowdays, so it mostly is the case.

>ping -c3 -s1400 perlmonks.org
PING perlmonks.org (209.197.123.153): 1400 data bytes
1408 bytes from 209.197.123.153: icmp_seq=0 ttl=49 time=85.135 ms
1408 bytes from 209.197.123.153: icmp_seq=1 ttl=49 time=82.106 ms
1408 bytes from 209.197.123.153: icmp_seq=2 ttl=49 time=83.449 ms

--- perlmonks.org ping statistics ---
3 packets transmitted, 3 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 82.106/83.563/85.135/1.239 ms

>ping -c3 -s1500 perlmonks.org
PING perlmonks.org (209.197.123.153): 1500 data bytes
Request timeout for icmp_seq 0
Request timeout for icmp_seq 1

--- perlmonks.org ping statistics ---
3 packets transmitted, 0 packets received, 100.0% packet loss
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