127.0.0.1 localhost
127.0.0.1 test.com # valid
127.0.0.2 test.com  # invalid

# a comment

127.0.0.1 a.com # some note1
127.0.0.1 b.com # some note2
127.0.0.1 c.com # another note2
127.0.0.1 d.com # some e.com note

127.0.0.1                   d.com
127.0.0.1 d.com # some e.com note

127.0.0.2 b.com     c.com   e.com  d.com   # comment for e.com

::1		    localhost
