Android/Termux DNS resolve failed: lookup gw.xju.edu.cn on [::1]:53

[xzk09164418-droid]

Environment

• Device: Android phone
• Architecture: arm64
• App: Termux
• bitsrun version: android_arm64 release
• Network: campus network (srun)

Problem

bitsrun fails to resolve DNS on Android/Termux.

Error:

lookup gw.xju.edu.cn on [::1]:53:
read udp [::1]:xxxxx->[::1]:53:
read: connection refused

What I tested

• curl works normally
• ping works normally
• DNS works in Termux
• resolv.conf configured manually
• GODEBUG=netdns=cgo tested
• GODEBUG=ipv6=0 tested

But bitsrun still forces DNS queries to [::1]:53.

Additional info

The downloaded binary is:

bitsrun_android_arm64.tar.gz

Architecture check:

ELF 64-bit LSB pie executable, ARM aarch64

Looks like the Go resolver is not correctly using Android netd DNS.

Maybe CGO_ENABLED=0 or Go resolver issue on Android.

[Mmx233]

The release binaries are static builds with CGO disabled, so Android/Termux uses Go's pure resolver instead of the system resolver.

A CGO-enabled Android-specific build would complicate the cross-build pipeline. Would an explicit DNS option be acceptable?

settings:
  basic:
    dns_server: "10.x.x.x:53"

[Mmx233]

And by the way, you mentioned that you manually configured resolv.conf. Could you confirm which resolv.conf you changed? Was it /data/data/com.termux/files/usr/etc/resolv.conf?

[xzk09164418-droid]

Yes, I modified:

/data/data/com.termux/files/usr/etc/resolv.conf

with:

nameserver 223.5.5.5
nameserver 8.8.8.8

but bitsrun still resolved DNS through [::1]:53.