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TUN inbound: Add FreeBSD support (#5891)

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And reverts "refactor `mtu` to support setting IPv4/v6 separately" https://github.com/XTLS/Xray-core/pull/5891#issuecomment-4245677624

And fixes `autoOutboundsInterface` on Windows https://github.com/XTLS/Xray-core/pull/5887#issuecomment-4251719900

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Co-authored-by: LjhAUMEM <llnu14702@gmail.com>
This commit is contained in:
Boris Korzun
2026-04-15 15:40:19 +03:00
committed by GitHub
parent ff6126463b
commit 6780045550
10 changed files with 209 additions and 45 deletions
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proxy/tun/README.md
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@@ -173,6 +173,25 @@ Note on ipv6 support. \
Despite Windows also giving the adapter autoconfigured ipv6 address, the ipv6 is not possible until the interface has any _routable_ ipv6 address (given link-local address will not accept traffic from external addresses). \
So everything applicable for ipv4 above also works for ipv6, you only need to give the interface some address manually, e.g. anything private like fc00::a:b:c:d/64 will do just fine
## FreeBSD SUPPORT
FreeBSD support of the same functionality is implemented through tun(4).
Interface name in the configuration must comply to the scheme "tunN", where N is some number. \
It's necessary to set an IP address to the interface, ex.:
```
ifconfig tun0 inet 169.254.10.1/30
```
To attach routing to the interface, route command like following can be executed:
```
route add -net 1.1.1.0/24 -iface tun10
```
```
route add -inet6 -host 2606:4700:4700::1111 -iface tun10
route add -inet6 -host 2606:4700:4700::1001 -iface tun10
```
Important to remember that everything written above about Linux routing concept, also apply to FreeBSD. If you simply route default route through tun interface, that will result network loop and immediate network failure.
## MAC OS X SUPPORT
Darwin (Mac OS X) support of the same functionality is implemented through utun (userspace tunnel).