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Re: [tor-bugs] #18749 [Core Tor/Tor]: Consider only including one fallback per operator
#18749: Consider only including one fallback per operator
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Reporter: teor | Owner:
Type: enhancement | Status:
Priority: Medium | needs_review
Component: Core Tor/Tor | Milestone: Tor:
Severity: Normal | 0.2.???
Keywords: 029-proposed, TorCoreTeam201604 | Version:
Parent ID: #17158 | Resolution:
Reviewer: | Actual Points: 8 hours
| Points: small
| Sponsor:
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Comment (by teor):
One operator withdrew a fallback that was on the hard-coded fallback list.
I have pushed a fixup after rebuilding the list. 11 fallbacks on the list
changed (another turns up in the diff, but is just a reordering). It's
good to see the list is stable, even though I changed 14
whitelist/blacklist entries.
Here is the updated analysis:
'''One Per Operator'''
* 100 fallbacks were selected
* all 100 fallbacks passed the 15s consensus download check
* 78 more are available from distinct operators
* 102 were eliminated due to the "one per operator" restriction (family,
contact, IP)
'''Bandwidth'''
The range of bandwidths selected is 6.0 - 67.2 MB/s.
'''Network Diversity'''
Here is the updated network diversity analysis:
{{{
27/100 = 27% of fallbacks are on IPv6
There are 4/100 = 4% fallbacks in the IPv4 /16 containing 37.187.7.74
32/100 = 32% of fallbacks are in an IPv4 /16 with other fallbacks
There are 2/100 = 2% fallbacks in the IPv4 /24 containing 91.219.237.244
2/100 = 2% of fallbacks are in an IPv4 /24 with other fallbacks
There are 5/27 = 19% fallbacks in the IPv6 /32 containing
[2001:41d0:e:f67::114]
16/27 = 59% of fallbacks are in an IPv6 /32 with other fallbacks
There are 3/27 = 11% fallbacks in the IPv6 /48 containing
[2001:41d0:a:74a::1]
5/27 = 19% of fallbacks are in an IPv6 /48 with other fallbacks
There are 2/27 = 7% fallbacks in the IPv6 /64 containing
[2a03:b0c0:3:d0::208:5001]
2/27 = 7% of fallbacks are in an IPv6 /64 with other fallbacks
40/100 = 40% of fallbacks are on IPv4 ORPort 443
42/100 = 42% of fallbacks are on IPv4 ORPort 9001
18/100 = 18% of fallbacks are on other IPv4 ORPorts
10/27 = 37% of IPv6 fallbacks are on IPv6 ORPort 443
7/27 = 26% of IPv6 fallbacks are on IPv6 ORPort 9001
10/27 = 37% of IPv6 fallbacks are on other IPv6 ORPorts
38/100 = 38% of fallbacks are on DirPort 80
44/100 = 44% of fallbacks are on DirPort 9030
18/100 = 18% of fallbacks are on other DirPorts
22/100 = 22% of fallbacks have the Exit flag
}}}
This isn't a significant change from the previous list.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18749#comment:12>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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