In many cases, people do not take enough care to remove their IP addresses from some output before posting it to help forums and Q&A sites like askubuntu.
Considering one's IP address is revealed publicly, what are the possible threats he/she/bot may face and what can one do to avoid them?
Also, is there any threat in revealing other data like Broadcast address, Subnet mask, Default route, Primary DNS and Secondary DNS ?
Of course we will consider that the person/bot is using a supported version of Ubuntu or it's official derivatives.