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Re: [tor-relays] why the network lost 350 relays and some, bridges

I was intrigued by the high number of consumer IP's that these relay are supposed to be running on while seemingly automated updating the relay version. The nickname made me look into Ubuntu Snaps as a possible tor distribution which led me to this snap: https://snapcraft.io/tor-middle-relay.
It was last updated the 9th of January and when you download the stable snap it is actually named 'snap269'. So the maintainer in this case is the snap maintainer, but not necessarily the relay(s) operator. I have not looked into how these snaps actually work but it may be the case that they actually needed the PortForwaring functionality to get tor running inside a snap.
Given that information it could very well be the case that these relays are not running behind a NAT and not run by the same operator but actually by a group of different people. 


Date: Sat, 12 Jan 2019 08:07:00 +0000
From: nusenu <nusenu-lists@xxxxxxxxxx>


this occurred when these relays upgraded from tor 0.3.3.10 to 0.3.4.9
(package maintainer update)

All these relays were behind NAT devices and they relied on a tor
feature that got removed between these two versions:


   o Removed features:
     - The PortForwarding and PortForwardingHelper features have been
       removed. [...]https://trac.torproject.org/projects/tor/ticket/25409


I guess I somehow expected that: the maintainer patched tor 0.3.4.10 to added this
feature again and here we go again with the flood of relays using that version of tor:

79 relays from 2019-01-11:

|   Up |   Ext | JoinTime   | Nickname   | Version   | IP              | AS                                       | CC   |   ORp |   Dirp | OS    | Contact   |   eFamMembers | FP                                       |
|------+-------+------------+------------+-----------+-----------------+------------------------------------------+------+-------+--------+-------+-----------+---------------+------------------------------------------|
|    0 |     0 | 01:06:55   | snap269    | 0.3.4.10  | 117.104.229.222 | Instatelecom Limited                     | af   | 43453 |      0 | Linux | None      |             1 | CF52FF9F481C618E540D5DACB0C2875F1B7687B5 |
|    0 |     0 | 01:27:25   | snap269    | 0.3.4.10  | 90.253.141.146  | Vodafone Limited                         | gb   | 46089 |      0 | Linux | None      |             1 | B483C5FE8A2888F8E02885D8488404DBBEFBCF3B |
[SNIP] 
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