- Convert line terminators in the form field so that it matches the
current status information resulting in proper detection of change in
value.
- Allow IPv6 addresses properly. Allow "[ipv6]:port" format.
- Make specifying port optional.
- Allow spaces at the beginning and ending of the line to compensate for
copy/paste errors.
- Allow empty lines between bridge specifications.
- Allow multiple spaces between the components.
- Raise error if upstream bridges are not provided when 'use upstream
bridges' option is enabled.
- Write tests for upstream bridges validator.
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