cherry-pick #436: support domain name

[wey-gu]

do not merge, should be a candidate for a new base: v2.6.2

[codecov-commenter]

Codecov Report

❗ No coverage uploaded for pull request base (v2.6.1@064f3a4). Click here to learn what that means.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             v2.6.1     #437   +/-   ##
=========================================
  Coverage          ?   63.64%           
  Complexity        ?      705           
=========================================
  Files             ?       65           
  Lines             ?     3339           
  Branches          ?      473           
=========================================
  Hits              ?     2125           
  Misses            ?      890           
  Partials          ?      324           

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