[tor-bugs] #27826 [Core Tor/Tor]: incompatibility between tor 0.3.4.8 and onionbalance 0.1.6

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#27826: incompatibility between tor 0.3.4.8 and onionbalance 0.1.6
---------------------------+------------------------------
 Reporter:  pabs           |          Owner:  (none)
     Type:  defect         |         Status:  new
 Priority:  Medium         |      Component:  Core Tor/Tor
  Version:  Tor: 0.3.4.8   |       Severity:  Normal
 Keywords:  onion-service  |  Actual Points:
Parent ID:                 |         Points:
 Reviewer:                 |        Sponsor:
---------------------------+------------------------------
 Debian recently upgraded our onion services from tor 0.3.3.9-1~bpo9+1 to
 0.3.4.8-1~bpo9+1 (from the Debian stretch-backports archive) while using
 onionbalance 0.1.6-1 from Debian stretch. This broke all of our onion
 services that are backed by multiple hosts using onionbalance. Access to
 the backend addresses was working fine in Tor Browser, but the frontend
 addresses were timing out. I tried downgrading tor on the backends but
 that did not help. Downgrading tor on the onionbalance host helped and
 upgrading onionbalance to 0.1.8-3 from Debian buster also fixed the issue.
 I've requested an onionbalance backport but on IRC arma requested I file a
 bug report about the incompatibility. The onionbalance logs showed lots of
 these errors:

 {{{
 [WARNING]: Error generating descriptor: No introduction points for service
 <frontend>.onion.
 [INFO]: Our descriptor for instance <backend>.onion is too old. The
 instance may be offline.
 }}}

 PS: arma requested on IRC that dgoulet/asn look at this.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/27826>
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