The viettel-sgn server is down (May 29, 2026)

Hi,

The viettel-sgn server has been down for over 24 hours. It seems this issue is lasting longer than usual, so I'm creating this report.

Diag: https://nextdns.io/diag/92205080-5b3d-11f1-8d83-976442eb6a2c

Additionally, there's an issue with the viettel-han IPv6 server: it often fails to ping and always reports an error.

Hopefully, this issue will be fixed soon.

Thank you!