'Why is IP_MULTICAST_IF and IPV6_MULTICAST_IF needed?
Say for example, my machine is multi-homed and has two network interfaces:
- Wireless LAN adapter WiFi : Ip: 10.20.19.140
- Ethernet adapter Ethernet: Ip: 10.20.19.154
I create two UDP sockets one listening on (1) and other on (2). The i am assuming the interface is already assigned, then why do i need IP_MULTICAST_IF and IPV6_MULTICAST_IF?
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