Subj : .onion v2 addresses will be deprecated
To   : All
From : Oli
Date : Mon Dec 14 2020 20:46:10

The Tor project will start removing support for version 2 Onion services (aka Hidden Service) from July 15th, 2021.
https://blog.torproject.org/v2-deprecation-timeline

I'm using a v2 .onion address for my node, which is 16 characters long and can be put in a user flag (which are limited to 32 chars):
.....,U,ON2:boqbccnwyumttwvh

The newer version 3 addresses are 56 characters long (without the .onion), e.g.:
fsx5wsikeq5tdj5gx7wimf53ub2krglm5brfzz6nbvbwywzhg6za.onion

I wonder what the best way to list v3 Onion addresses. Would it be acceptable to put the address in a new flag or is it too long for the nodelist? We could use O?? flags that mirror the I?? flags, like

OBN:fsx5wsikeq5tdj5gx7wimf53ub2krglm5brfzz6nbvbwywzhg6za.onion

and/or
ONA:fsx5wsikeq5tdj5gx7wimf53ub2krglm5brfzz6nbvbwywzhg6za.onion,OBN,OFC

and/or distribute it as a separate list in binkd format:
node 21:9/999@fsxnet fsx5wsikeq5tdj5gx7wimf53ub2krglm5brfzz6nbvbwywzhg6za.onion

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 * Origin:  (21:3/102)

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