UDP effects
When UDP datagram fragments at the host, each fragment may generate an ARP request (results in an ARP reply: ARP flooding)
- RFC 1122/23 limits max ARP rate to 1 request per second, and requires the ARP Q to be at least of size one
Datagram truncation possible at destination if dest app not prepared to handle that datagram size ! (note: TCP does not have this problem because it has no message boundaries)
UDP sources ignore source quench messages => can’t respond to packet losses.