sing-box exited with a fatal error while using WireGuard

### Operating system Linux ### System version Arch Linux Rolling ### Installation type Original sing-box Command Line ### If you are using a graphical client, please provide the version of the client. _No response_ ### Version ```shell 1.13.13 ``` ### Description sing-box exited with fatal error: `FATAL[0000] start service: start outbound/wireguard[US]: set search domain: no IPv4 server configured and no usable next address in IPV6_ADDRESS for DNS` The same config file is works fine with v1.13.12. config example: ``` { "endpoints": [ { "type": "wireguard", "tag": "US", "system": true, "name": "us", "mtu": 1280, "address": ["IPV4_ADDRESS_PLACEHOLDER/128", "IPV6_ADDRESS_PLACEHOLDER/128"], "private_key": "PRIVATE_KEY_PLACEHOLDER", "peers": [ { "address": "162.159.192.1", "port": 2408, "public_key": "PUBLIC_KEY_PLACEHOLDER", "allowed_ips": ["0.0.0.0/0", "::/0"], "persistent_keepalive_interval": 30 } ] }, ], "inbounds": [], "outbounds": [ { "type": "direct", "tag": "DIRECT" } ], "route": { "final": "DIRECT" } } ``` ### Reproduction 1. Install sing-box v1.13.13 2. Run with same config file 3. Exited with fatal error ### Logs ```shell FATAL[0000] start service: start outbound/wireguard[US]: set search domain: no IPv4 server configured and no usable next address in IPV6_ADDRESS for DNS ``` ### Supporter - [ ] I am a [sponsor](https://github.com/sponsors/nekohasekai/) ### Integrity requirements - [x] 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. - [x] 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. - [x] 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. - [x] 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.