I made a graph of the bandwidth on the two bridges since this started happening.
The two vertical lines mark: 2023-09-20 14:00:00 earliest known case of domain resolving to Cloudflare 2023-09-21 18:00:00 change to foursquare.com in rdsys https://gitlab.torproject.org/tpo/anti-censorship/rdsys-admin/-/merge_reques...
1. snowflake-02 bandwidth has dwindled to almost nothing. Seriously almost nothing: it's around 3 MB/s currently. 2. There's a huge almost instantaneous step in snowflake-01 at around 2023-09-21 13:00:00. At first, I thought this might have been a consequence of the rdsys change, but it's about 5 hours earlier than that. What could it be? Some unrelated unblocking event that just happened to happen while this domain stuff is happening?
On Wed, Sep 20, 2023 at 01:03:06PM -0600, David Fifield wrote:
According to OONI measurements, the domain cdn.sstatic.net has started sometimes to resolve to a Cloudflare IP address, rather than a Fastly one. If a Snowflake client gets a Cloudflare IP address, their connection will fail, with this in the tor log:
[notice] Managed proxy "./client": offer created [notice] Managed proxy "./client": broker failure Unexpected error, no answer.
OONI has measurements of cdn.sstatic.net. The earliest measurement that resolved to a Cloudflare IP address is timestamped 2023-09-20 13:58:50:
https://explorer.ooni.org/m/20230920135923.824819_SE_webconnectivity_68a1a7b...
