Background#
The speed of the on-campus network at a certain university is limited to 30Mbps (equivalent to 3.75M/s), which is very frustrating when downloading large files such as games and models. However, in daily life, it was accidentally discovered that there is no restriction when accessing specific resources at extremely small times, such as downloading installation packages from some app stores or installing Python packages using Anaconda, which can reach around 20M/s, which is already sufficient.
Recently, I accidentally came across someone who researched and used the software Dogfight360 - 羽翼城个人博客 by a master to redirect Steam download requests to IPv6-supported CDNs and obtain full-speed downloads. After experimenting, it was indeed feasible.
So I had an idea: since there is no speed limit for IPv6, is there a way to send out any traffic using IPv6 to bypass restrictions?
After understanding, some universities do not charge for IPv6 traffic, and you can also try some methods like this. But if your campus network does not support IPv6 or also has speed restrictions, then this method is meaningless.
Test if IPv6 is supported:
- IPv6 test (ipip.net)
- Or enter in the command line:
ping 2001:4860:4860::8888to see if it can be pinged.
Principle#
Use an IPv6 node to forward all local traffic to IPv6, thereby achieving a method to bypass speed limits. (It's the same as scientific internet access)
Specific Methods#
Directly find nodes that support IPv6 protocol#
I remember seeing some airports with these nodes before. If you are interested, you can search for them yourself. Or maybe I remembered it wrong
Self-built node#
It is best to have an idle VPS. Note that it needs to support IPv6.
Reference:
Then export the subscription and use it in V2rayN.
If you usually use Clash, you can use the following website to convert vmess to Clash configuration files.
v2ray 转 clash 节点 - v2rayse.com
Remember to enable the IPv6 option in the Clash settings.