RFC 5135
RFC 5135: IP Multicast Requirements for a Network Address Translator (NAT) and a Network Address Port Translator (NAPT)
RFC 5135 - IP Multicast Requirements for a Network Address Translator (NAT) and a Network Address Port Translator (NAPT)
RFC
NAT
自224/8到231/8，和233/8到239/8範圍的IP位置是保留用於ASM使用