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Re: [tor-bugs] #33157 [Circumvention/Snowflake]: Client generates SDP with "IN IP4 0.0.0.0", causing proxy to send "client_ip=0.0.0.0" and bridge to send "USERADDR 0.0.0.0:1"
#33157: Client generates SDP with "IN IP4 0.0.0.0", causing proxy to send
"client_ip=0.0.0.0" and bridge to send "USERADDR 0.0.0.0:1"
-------------------------------------+------------------------
Reporter: dcf | Owner: (none)
Type: defect | Status: new
Priority: Medium | Milestone:
Component: Circumvention/Snowflake | Version:
Severity: Normal | Resolution:
Keywords: | Actual Points:
Parent ID: | Points:
Reviewer: | Sponsor:
-------------------------------------+------------------------
Comment (by arma):
Replying to [comment:11 arma]:
> Replying to [comment:10 dcf]:
> > Since the fix in #33385 on 2020-02-20, only about 20–30% of
connections at the bridge have a meaningful `client_ip`. I believe this is
causing us to undercount clients and/or bandwidth, even though we no
longer set `USERADDR` for those 0.0.0.0 connections. In the absence of
`USERADDR`, tor will use a 127.0.0.1 address, which like 0.0.0.0 is
ignored for the purpose of bandwidth accounting.
>
> I agree with your analysis.
For a short-term workaround, you can set "CountPrivateBandwidth 1" in the
torrc of the snowflake bridge. I'd give that 80% odds of doing what you
want. :)
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/33157#comment:12>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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