Control: tags -1 + moreinfo Hi Miguel,
sorry for reviving the old bug report https://bugs.debian.org/535441 you filed a few years ago, I'm doing a bit of housekeeping. Do you still have the same setup and does the problem still persist? If that's the case, I will need your help in determining the cause of the problem. Can you capture the traffic of your nmap scan using tcpdump. The command should be something like (as root): tcpdump -npi YOUR_INTERFACE_NAME -w nmap-scan.pcap \ 'tcp and (port 515 or port 631 or port 9100)' You need to start this tcpdump command before you start the nmap scan and terminate it (using CTRL+C) after nmap has finished. Afterwards please compress the output using `xz nmap-scan.pcap` and send me the resulting nmap-scan.pcap.xz file. This file will contain all network traffic from and to your machine that involves one of the listed port and the TCP protocol. So it may also contain something that is not related to the scan (which could be sensitive information). Thus I would recommend only sending the file to me directly and not to the bug report so this file does not get published. Regards Lukas