Problem
1. Which ICMP messages contain part of the IP datagram? Why is this needed?
2. Make a table to compare and contrast error-reporting messages in ICMPv6 with error-reporting messages ICMPv4.
3. Make a table to compare and contrast informational messages in ICMPv6 with informational messages in ICMPv4.
4. Make a table to compare and contrast neighbor-discovery messages in ICMPv6 with the corresponding messages in version 4.