Before 2.5.9 mon$attachments.mon$remote_address returned just IP, e.g.: "192.168.0.1".
With 2.5.9 it returns IP + port number, e.g.: "192.168.0.1/55970".
It made broke some of our code. (We are comparing mon$remote_address to outer source IP without port)
It this intentional, a side effect or a bug? Changelog doesn't mentions this change.