…cate memory' issue

Signed-off-by: Shlomi Bitton <shlomibi@nvidia.com>

Change the verbosity level from ERROR to INFO for returned code of 'Network is unreachable' when sending packets.
This is because by design, the relay will try to relay packets to all DHCP servers even if there is no route to it and then the error message will print out.

Signed-off-by: Shlomi Bitton <shlomibi@nvidia.com>

…MGMT interface.

The MGMT is incremented to check if DHCP packets are traveling through mgmt interface, it is not part of the aggregate device counters.
To allow checking the MGMT interface health as well, we need to check the counters of MGMT interface also, so on function 'dhcp_device_check_health' we need to check the current device counters, not only the aggregate device.

Signed-off-by: Shlomi Bitton <shlomibi@nvidia.com>

Get the correct option ID in order to get the inner DHCP message

Signed-off-by: Shlomi Bitton <shlomibi@nvidia.com>