[程序崩溃] TUN 入站 代理 udp 流量
### 完整性要求
- [x] 我读完了 issue 模板中的所有注释，确保填写符合要求。
- [x] 我保证阅读了文档，了解所有我编写的配置文件项的含义，而不是大量堆砌看似有用的选项或默认值。
- [x] 我提供了完整的配置文件和日志，而不是出于自己的判断只给出截取的部分。
- [x] 我搜索了 issues, 没有发现已提出的类似问题。
- [x] 问题在 Release 最新的版本上可以成功复现
### 描述
客户端，使用 TUN 入站，代理发送 udp 流量，有时会导致程序崩溃。
测试，出站为 vless 时无问题，出站为 hysteria2 或 dns 时，发生 程序崩溃 现象。
日志 1 的配置为，TUN入站 -> socks 出站 -> 本地socks入站 -> hysteria2 出站
日志 2 的配置为，TUN入站 -> hysteria2 出站
版本：
Xray 26.6.1 (Xray, Penetrates Everything.) 94ffd50 (go1.26.3 windows/amd64)
### 重现方式
使用 TUN 入站，出站使用 dns 或 hysteria2。代理发送 udp 流量。例如 udp/53 dns 请求，或 quic 443。
### 客户端配置
<details><pre><code>
{
"inbounds": [
{
"tag": "in-tun",
"protocol": "tun",
"settings": {
"name": "tun0",
"mtu": 1400,
"gateway": ["10.0.0.1/16", "fdfe::1/64"],
"dns": ["1.1.1.1"],
"userLevel": 0,
"autoSystemRoutingTable": ["0.0.0.0/0", "::/0"],
"autoOutboundsInterface": "auto"
},
"sniffing": {
"enabled": true,
"destOverride": [
"http",
"tls",
"quic",
"fakedns"
]
}
}
],
"outbounds": [
{
"tag": "out-direct",
"protocol": "freedom",
"settings": {
"domainStrategy": "AsIs",
"userLevel": 0
}
},
{
"tag": "out-proxy",
"protocol": "hysteria",
"settings": {
"version": 2,
"address": "x:x:x:x:x:x:x:x",
"port": 443
},
"streamSettings": {
"security": "tls",
"tlsSettings": {
"fingerprint": "firefox",
"serverName": "y.y.com"
},
"network": "hysteria",
"hysteriaSettings": {
"version": 2,
"auth": "xxxxx"
},
"finalmask": {
"udp": [
],
"quicParams": {
"congestion": "brutal",
"bbrProfile": "aggressive",
"brutalUp": "32 mbps",
"brutalDown": "256 mbps"
}
}
}
}
{
"tag": "out-dns",
"protocol": "dns",
"settings": {
"rewriteNetwork": "udp",
"rewriteAddress": "1.1.1.1",
"rewritePort": 53,
"userLevel": 0,
"rules": [
{
"action": "return",
"rCode": 5,
"domain": ["geosite:category-ads-all", "wpad.DHCP HOST"]
},
{
"action": "hijack",
"qtype": 1
},
{
"action": "hijack",
"qtype": 28
},
{
"action": "direct",
"domain": ["regexp:.*"]
}
]
}
}
],
"routing": {
"domainStrategy": "IPOnDemand",
"rules": [
{
"ruleTag": "rule-catch-dns",
"port": 53,
"outboundTag": "out-dns"
},
{
"ruleTag": "rule-!cn-proxy",
"domain": [
"geosite:geolocation-!cn"
],
"outboundTag": "out-proxy"
},
{
"ruleTag": "rule-cn-direct",
"domain": [
"geosite:cn"
],
"outboundTag": "out-direct"
},
{
"ruleTag": "rule-ip-direct",
"ip": [
"geoip:private",
"geoip:cn"
],
"outboundTag": "out-direct"
},
{
"ruleTag": "rule-default-proxy",
"network": "tcp,udp",
"outboundTag": "out-proxy"
}
]
}
}
</code></pre></details>
### 服务端配置
NONE
### 客户端日志
日志 1：
```
2026/06/05 22:39:14.550883 [Info] [656051477] proxy/tun: processing from udp:10.0.0.1:63135 to udp:34.107.243.93:443
2026/06/05 22:39:14.552301 [Info] [656051477] app/dispatcher: Hit route rule: [rule-default-proxy] so taking detour [out#jp-osaka@oracle] for [udp:34.107.243.93:443]
2026/06/05 22:39:14.552815 [Info] [656051477] transport/internet/tcp: dialing TCP to tcp:127.0.0.1:59091
2026/06/05 22:39:14.552815 [Debug] [656051477] transport/internet: dialing to tcp:127.0.0.1:59091
2026/06/05 22:39:14.552815 from udp:10.0.0.1:63135 accepted udp:34.107.243.93:443 [in-tun -> out#jp-osaka@oracle]
2026/06/05 22:39:14.552815 [Debug] [656051477] transport/internet: dialing to udp:127.0.0.1:63136
2026/06/05 22:39:14.555173 [Info] [23791235] proxy/socks: client UDP connection from tcp:127.0.0.1:49687
2026/06/05 22:39:14.556098 [Debug] [23791235] proxy/socks: send packet to udp:34.107.243.93:443 with 1252 bytes
2026/06/05 22:39:14.556098 [Debug] [23791235] transport/internet/udp: dispatch request to: udp:34.107.243.93:443
2026/06/05 22:39:14.556613 [Info] [23791235] transport/internet/udp: establishing new connection for udp:34.107.243.93:443
2026/06/05 22:39:14.556613 [Debug] [23791235] proxy/socks: send packet to udp:34.107.243.93:443 with 1252 bytes
2026/06/05 22:39:14.556613 [Debug] [23791235] transport/internet/udp: dispatch request to: udp:34.107.243.93:443
2026/06/05 22:39:14.556613 [Info] [23791235] app/dispatcher: Hit route rule: [rule-bal-oosk] so taking detour [oosk-hy2-v6] for [udp:34.107.243.93:443]
2026/06/05 22:39:14.557191 [Info] [23791235] proxy/hysteria: tunneling request to udp:34.107.243.93:443 via UDP:[x:x:x:x:x:x:x:x]:443
2026/06/05 22:39:14.556098 from tcp:127.0.0.1:49687 accepted udp:34.107.243.93:443 [inbal-oosk -> oosk-hy2-v6]
2026/06/05 22:39:14.669508 [Debug] [23791235] proxy/socks: writing back UDP response with 43 bytes
panic: Calling IP() on a DomainAddress.
goroutine 69952 [running]:
github.com/xtls/xray-core/common/net.domainAddress.IP(...)
github.com/xtls/xray-core/common/net/address.go:172
github.com/xtls/xray-core/proxy/tun.(*stackGVisor).writeRawUDPPacket(0x1b809bba0f0, {0x1b80e2b0020, 0x2b, 0x1fe0}, {{0x7ff75b7ea0c8?, 0x1b8192b5580?}, 0x5d68?, 0x1b8?}, {{0x7ff75b7ea538, 0x1b813cd281c}, ...})
github.com/xtls/xray-core/proxy/tun/stack_gvisor.go:132 +0x74
github.com/xtls/xray-core/proxy/tun.(*udpConn).WriteMultiBuffer(0x1b8159d8d40, {0x1b8183125f8, 0x1, 0x1})
github.com/xtls/xray-core/proxy/tun/udp_fullcone.go:134 +0x137
github.com/xtls/xray-core/common/buf.copyInternal({0x7ff75b7d7340, 0x1b80dba1220}, {0x1fe62080068, 0x1b8159d8d40}, 0x1b8123568d0)
github.com/xtls/xray-core/common/buf/copy.go:99 +0x15a
github.com/xtls/xray-core/common/buf.Copy(...)
github.com/xtls/xray-core/common/buf/copy.go:116
github.com/xtls/xray-core/proxy/socks.(*Client).Process.func7()
github.com/xtls/xray-core/proxy/socks/client.go:161 +0x1aa
github.com/xtls/xray-core/proxy/socks.(*Client).Process.OnSuccess.func12()
github.com/xtls/xray-core/common/task/task.go:12 +0x22
github.com/xtls/xray-core/common/task.Run.func1(0x1b80f1c4d20?)
github.com/xtls/xray-core/common/task/task.go:28 +0x28
created by github.com/xtls/xray-core/common/task.Run in goroutine 70052
github.com/xtls/xray-core/common/task/task.go:27 +0xdb
```
日志 2：
```
2026/06/06 18:32:05.237392 [Info] [1850638617] proxy/tun: processing from udp:[x:x:x:x:x:x:x:x]:59530 to udp:[y:y:y::1111]:53
2026/06/06 18:32:05.238153 [Info] [1850638617] app/dispatcher: Hit route rule: [rule-catch-dns] so taking detour [out-dns] for [udp:[y:y:y::1111]:53]
2026/06/06 18:32:05.238153 [Info] [1850638617] proxy/dns: handling DNS traffic to udp:1.1.1.1:53
2026/06/06 18:32:05.238703 [Info] [1850638617] proxy/dns: rejected type TypeAAAA query for domain wpad.DHCP HOST.
2026/06/06 18:32:05.238153 from udp:[x:x:x:x:x:x:x:x]:59530 accepted udp:[y:y:y::1111]:53 [in-tun -> out-dns]
panic: Calling IP() on a DomainAddress.
goroutine 2460 [running]:
github.com/xtls/xray-core/common/net.domainAddress.IP(...)
github.com/xtls/xray-core/common/net/address.go:172
github.com/xtls/xray-core/proxy/tun.(*stackGVisor).writeRawUDPPacket(0x18ea007fa4b0, {0x18ea09aca000, 0x4e4, 0x2000}, {{0x7ff730ddb2e8?, 0x18ea097732e0?}, 0x984?, 0x7ff7?}, {{0x7ff730ddb758, 0x18ea0aa19b28}, ...})
github.com/xtls/xray-core/proxy/tun/stack_gvisor.go:132 +0x74
github.com/xtls/xray-core/proxy/tun.(*udpConn).WriteMultiBuffer(0x18ea09c42640, {0x18ea03159d80, 0x1, 0x1})
github.com/xtls/xray-core/proxy/tun/udp_fullcone.go:134 +0x137
github.com/xtls/xray-core/common/buf.copyInternal({0x7ff730dc97c0, 0x18ea09aae380}, {0x1c9e5834708, 0x18ea09c42640}, 0x18ea09ad0030)
github.com/xtls/xray-core/common/buf/copy.go:99 +0x15a
github.com/xtls/xray-core/common/buf.Copy(...)
github.com/xtls/xray-core/common/buf/copy.go:116
github.com/xtls/xray-core/proxy/hysteria.(*Client).Process.func5()
github.com/xtls/xray-core/proxy/hysteria/client.go:148 +0x1da
github.com/xtls/xray-core/proxy/hysteria.(*Client).Process.OnSuccess.func11()
github.com/xtls/xray-core/common/task/task.go:12 +0x22
github.com/xtls/xray-core/common/task.Run.func1(0x18ea09778f4c?)
github.com/xtls/xray-core/common/task/task.go:28 +0x28
created by github.com/xtls/xray-core/common/task.Run in goroutine 2424
github.com/xtls/xray-core/common/task/task.go:27 +0xdb
```
### 服务端日志
NONE
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