Only pack hostname but ignore numbers in domain

[Wing924]

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[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@beb699a). Click here to learn what that means.
The diff coverage is 100.00%.

❗ Current head 3b91e6c differs from pull request most recent head 6a7e062. Consider uploading reports for the commit 6a7e062 to get more accurate results

@@            Coverage Diff             @@
##             master        #5   +/-   ##
==========================================
  Coverage          ?   100.00%           
==========================================
  Files             ?         4           
  Lines             ?       127           
  Branches          ?         0           
==========================================
  Hits              ?       127           
  Misses            ?         0           
  Partials          ?         0           

Impacted Files	Coverage Δ
common.go	100.00% <100.00%> (ø)
pack.go	100.00% <100.00%> (ø)

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