What's the difference between IPv6 and IPv4?

The first one does not say Ha, 32bit directly upgraded to 128bit.

From 2 to 32 to 2 of 128 times, every grain of sand on earth can be divided into one IP address. This is the most windy place in IPv6.

In IPV6, routers cannot configure interfaces using automatic configuration mechanisms and must be manually configured. <cisco IPV6 Network Implementation Technology P17 clearly write >

So, my understanding is that routers cannot use IP dhcp-address to do DHCP clients to get addresses like the IPv4 interface.

Is this understood right here?

Can be on Cisco's iOS;

I did not delve into these two commands, do I say support DHCP clients?

How to achieve it?

IPv6 to cancel the ARP broadcast, instead of using the multicast method, also known as the Any-cast.

Advantages: You can reduce the CPU cost per host and router in the LAN.

More efficient use of network bandwidth.

Solved the problem of broadcast storm.

This is a big problem for IPv4. Many attacks are made using ARP to do the article. If ARP spoofing, ARP storm, ARP bomb etc.

Efficient header.

What changes IPv4 to IPv6 about the header?