Historically, "baud" is never used with respect to UDP, only with respect to serial (or, occasionally, parallel) connections. "baud" is "symbols per second", whereas UDP is described in terms of throughput in bytes per second. Specific transmission mechanisms such as ethernet or wi-fi might be spoken of in terms of carrier frequency, but would much more commonly be spoken of in terms of bits transmitted per second (aggregated over multiple channels in gigabit ethernet, and ethernet tends to send bit constellations with, for example, 5/4 encoding at less than gigabit, and the channel encoding for gigabit ethernet is not popping into my mind at the moment.)
For udp, per-packet interrupts are common, so to estimate the workload we need to know the packet rate and the total packet size and the payload size and the number of bytes per sample; also the link speed and the MTU you are using.