[Feature Request] ignore tun config when run without access permission

[togls]

Operating system

Windows

System version

win11

Installation type

Original sing-box Command Line

If you are using a graphical client, please provide the version of the client.

No response

Version

sing-box version 1.10.4

Environment: go1.23.4 windows/amd64
Tags: with_gvisor,with_quic,with_dhcp,with_wireguard,with_ech,with_utls,with_reality_server,with_acme,with_clash_api
Revision: be6400f021f898139459cd917b8897946943535e
CGO: disabled

Description

ignore tun config when run without access permission

Reproduction

FATAL[0000] start service: initialize inbound/tun[1]: configure tun interface: Access is denied.

Logs

No response

Supporter

• I am a sponsor

Integrity requirements

• I confirm that I have read the documentation, understand the meaning of all the configuration items I wrote, and did not pile up seemingly useful options or default values.
• I confirm that I have provided the server and client configuration files and process that can be reproduced locally, instead of a complicated client configuration file that has been stripped of sensitive data.
• I confirm that I have provided the simplest configuration that can be used to reproduce the error I reported, instead of depending on remote servers, TUN, graphical interface clients, or other closed-source software.
• I confirm that I have provided the complete configuration files and logs, rather than just providing parts I think are useful out of confidence in my own intelligence.