# IP packet details · supporting practice

Subject: Computer Networks

Exam: M2

Reader: https://deep-learning-study-room.vercel.app/cn/#m2/read/packet-support

Canonical: https://deep-learning-study-room.vercel.app/read/cn/m2/read-chapter/packet-support/

Unit 4 support · header comparison; fragmentation is additional practice

1. [IPv4 header fields needed for the IPv6 comparison](https://deep-learning-study-room.vercel.app/read/cn/m2/read/packet-support--ipv4-header/)
2. [IPv4 header-length example 1](https://deep-learning-study-room.vercel.app/read/cn/m2/read/packet-support--ihl-1/)
3. [IPv4 header-length example 2](https://deep-learning-study-room.vercel.app/read/cn/m2/read/packet-support--ihl-2/)
4. [IPv4 header-length example 3](https://deep-learning-study-room.vercel.app/read/cn/m2/read/packet-support--ihl-3/)
5. [IPv4 fragmentation · optional extension](https://deep-learning-study-room.vercel.app/read/cn/m2/read/packet-support--fragmentation/)
6. [Optional fragmentation · example 1](https://deep-learning-study-room.vercel.app/read/cn/m2/read/packet-support--fragment-1/)
7. [Optional fragmentation · example 2](https://deep-learning-study-room.vercel.app/read/cn/m2/read/packet-support--fragment-2/)
8. [Optional fragmentation · example 3](https://deep-learning-study-room.vercel.app/read/cn/m2/read/packet-support--fragment-3/)