[44net] RIP transmission question

Hi there I understand that two ways optional to send RIP info 1) multicast (what now is operative) 2) direct transfer The multicast require that both interfaces AMPRGW and the ham gateway will have same netmask (in our case /8) is it the same with the direct transmit ? If yes why the multicast way was chosen ? what is the benefit ? Thanks for any info on the subject Ronen - 4Z4ZQ