[tor-bugs] #16430 [Tor]: tor relay rejecting DNS names containing underscore

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#16430: tor relay rejecting DNS names containing underscore
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     Reporter:  starlight    |      Owner:
         Type:  defect       |     Status:  closed
     Priority:  normal       |  Milestone:
    Component:  Tor          |    Version:  Tor: 0.2.6.9
   Resolution:  implemented  |   Keywords:
Actual Points:               |  Parent ID:
       Points:               |
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Comment (by yawning):

 A single trailing dot probably should be allowed, though Firefox
 apparently has some odd behavior here (Eg:
 https://bugzilla.mozilla.org/show_bug.cgi?id=134402 also something with
 cookies, something with the password manager, etc.).

 The dot started off as a BSD-ism to indicate to the resolver that the
 domain is absolute, `FQDN` isn't actually formally defined in the RFCs in
 a consistent manner (comment 28 in the mozilla bug has a summary), but
 dealing with it is easy.

 Even among the tools shipped with BIND, `dig` and `nslookup` both deal
 with a trailing dot correctly while `host` spits back an error, which is
 amusing since I would have hoped they'd get it correct.

 I'll fix this when I have a moment.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/16430#comment:9>
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