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Clarify options, and make backups when installing create_ap.conf file #434
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…plain default non-bridged network in a little more detail
May help with battery life, throughput, and signal retention depending on network environment
Uses the /lib/systemd/system-sleep mechanism. See https://www.freedesktop.org/software/systemd/man/systemd-suspend.service.html for how this works. For unclear reasons, this only works in /lib/systemd/system-sleep, not in /usr/lib/systemd/system-sleep. (ping oblique#153, oblique#167)
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…ate_ap.conf comments Also makes it *possible* to set ADDN_HOSTS via create_ap.conf
Use 'sudo create_ap --wps-pbc <id>' to simulate the button being pushed, or 'sudo create_ap --wps-pin <id>,<pin>' to enroll a specific PIN requested by a device.
I added WPS push-button and PIN modes in 86a3d60, but now they don't work for me. Apparently: 1. hostapd's built in EAP server *must* be enabled in order for WPS to complete. (Did this ever actually work for me previously, without this??) 2. Also, the 'push_button' method seems to have been replaced with 'virtual_push_button', per the following warning message from hostapd (v2.9): ``` WPS: Converting push_button to virtual_push_button for WPS 2.0 compliance ```
…d be used sparingly This extremely useful StackExchange post summarizes the different ways of indicating this to clients: https://unix.stackexchange.com/a/631812 1. Microsoft's "network cost information element" (https://learn.microsoft.com/fi-fi/windows-hardware/drivers/mobilebroadband/network-cost-information-element) which seems to be quasi-standard at this point. Recent versions of NetworkManager also understand it, but due to a mistake in earlier versions of Microsoft's documentation, older versions parse the element incorrectly (gory details at https://openwrt.org/docs/guide-user/network/wifi/ms-meteredconnection#under_the_hood). 2. Apple's vendor element (https://apple.stackexchange.com/a/457630) seems to be undocumented, but it can be copied/used as is. 3. Adding the value "ANDROID_METERED" as part of the force-sent DHCP option 43 causes Android devices to perceive this wireless network as metered (see https://unix.stackexchange.com/a/631812 as well as https://www.lorier.net/docs/android-metered.html).
These were needed because of an annoying bug in old versions of
'hostapd', where the kernel's entropy pool was used incorrectly, and 'hostapd'
would decide that there wasn't enough randomness available, e.g.:
random: Only 9/20 bytes of strong random data available from /dev/random
random: Not enough entropy pool available for secure operations
WPA: Not enough entropy in random pool for secure operations - update keys later when the first station connects
That issue has been fixed since hostapd v2.6, released in 2016
(https://packetstormsecurity.com/files/156573/Hostapd-Insufficient-Entropy.html),
so there's really no reason for 'create_ap' to have an entropy-checking
watchdog or to encourage users to install 'haveged'.
…tem-sleep For unclear reasons, this only worked for me on Ubuntu 16.04 if it was put in `/lib/systemd/system-sleep`, and NOT in `/usr/lib/systemd/system-sleep`. I'm unsure if this was a systemd bug, a distro bug, or what… but it's probably no longer applicable on modern distros. Fix it, and leave behind a warning comment. Thanks to @exuvo for bringing this up in #1.
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create_ap.confwhen installing a newer version