# Conflicts:
#	src/bin/dhcp4/json_config_parser.cc
#	src/bin/dhcp6/json_config_parser.cc

# Conflicts:
#	src/bin/dhcp6/json_config_parser.cc

Also, added a test for testing the hook library modifying a
received control command.

This is trivial change so I commit this on my discretion.

This is a result of the review.

Comparing the error_code directly causes test issues on some OSes.
See asio_wrapper.h for the details.

- Removed unncessary public:
- Added function description