3 ms·
No, they have different functions. Sending to ::1.2.3.4 would send an IPv6-in-IPv4 packet to 1.2.3.4. Using ::ffff:1.2.3.4 tells the OS that you want to send a
by wyufro 9y ago
No, they have different functions. Sending to ::1.2.3.4 would send an IPv6-in-IPv4 packet to 1.2.3.4. Using ::ffff:1.2.3.4 tells the OS that you want to send a proper IPv4 packet and no IPv6 is used on the wire.
I don't know why the former was deprecated, but I think almost no OS supported it so might've been just that.
- Avernar 9y agoThe former was depricated because the automatic tunneling transition method was depricated and none of the current IPV6 transition methods use them. Now some software use those addresses to store IPV4 addresses in the same memory as an IPV6 address.