This affects both the live session and when installed Attempts at network activity (e.g. ping) results in the message: "<command>: icmp open socket: Operation not permitted" "sudo <command>" does work, but gives a second error message: "sudo: /etc/sudoers.d is owned by uid 100000, should be 0" DNS look-up (e.g. dig) also does not work, even with "sudo". No error is raised, it simply fails to resolve. ISO: neon-useredition-20170622-1018-amd64.iso Install environment: VirtualBox 5.1.22r115126 64bit
The following seems to correct the sudoers.d problem: sudo chown -R root:root /etc/sudoers.d It does not address the networking issues.
Once sudoers.d is repaired the following appears to address the "ping" issue. sudo su - apt install --reinstall iputils-ping Dig can be repaired by a quick manual edit to "/etc/resolv.conf" nameserver 8.8.8.8 (Any valid DNS will do) I have not yet managed to determine why the local DNS server fails to resolve.
The DNS issue was an issue on my part due to multiple network interfaces. The "sudoers.d" and "ping" issues remained after testing with only one network interface attached; so those appear to be valid.
This does not appear to be an issue in the latest live ISO.