[v0.12 backport] Permit '=' separator and '[ipv6]' in --add-host #2149
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--add-host
option cli#4648--add-host
option cli#4648 (comment)Make it easier to specify IPv6 addresses in the '--add-host' option by permitting 'host=ip' in addition to 'host:ip', and allowing square brackets around the address.
For example:
(cherry picked from commit eeeff1c)