[Scientific Internet Access] How to Make IPV6 Go Directly

Mar 25, 2023#科学上网271

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Many VPN servers do not provide IPV6 addresses, causing services like Cloudflare and Github to not connect properly. The solution is to use v2ray or Clash software to enable direct connection with specific IPV6 addresses. If the proxy server can forward IPV6 traffic, it is also possible to send these IP addresses to the proxy.

Due to the fact that many VPN servers do not provide IPV6 addresses, services such as Cloudflare and Github cannot be connected correctly.

Solution:#

1. v2ray-like software#

Taking Qv2ray as an example
In Preferences - Advanced Routing Settings, enter the following content for the IP pool of the direct connection:

  2000::/3

This will enable direct connection (this IP is currently all the enabled IPV6 addresses worldwide, it is not recommended to use ::/0 because it contains many unused and invalid addresses).

2. Clash-like software#

When editing the configuration file, enter the following content:

  - IP-CIDR6,::1/128,DIRECT,no-resolve
  - IP-CIDR6,fc00::/7,DIRECT,no-resolve
  - IP-CIDR6,fe80::/10,DIRECT,no-resolve
  - IP-CIDR6,fd00::/8,DIRECT,no-resolve

This will enable direct connection.

Of course, if your proxy server can forward IPV6 traffic, it is also possible to send these IP addresses into the full proxy

Reference links:#

How to configure ipv6 routing - v2raycore