Monthly Archives: July 2014

SRF Videoplayer + Adobe Flash Pepper Plugin

Videos auf Webseite aufgrund veralteter Adobe flash
Xubuntu 13.04 – SRF funktioniert nicht
SF Video-Portal unter Linux Ubuntu nutzen
Use Pepper Flash Player From Google Chrome In Chromium Browser

Install under Ubuntu 14.04/14.10

How to Install Pepper Flash in Ubuntu 14.04

$ sudo apt-get install pepperflashplugin-nonfree
$ sudo update-pepperflashplugin-nonfree --install
$ sudo update-pepperflashplugin-nonfree --status
Flash Player version installed on this system  :
Flash Player version available on upstream site:

Check Flash Plugin

Flash About
Install Flash Player in 5 easy steps

Linux as a Wireless Access Point (WAP)

WLAN Accesspoint einrichten
WLAN Router

sudo nmcli nm wifi off
sudo rfkill unblock wlan

hostapd Linux documentation page
Hostapd : The Linux Way to create Virtual Wifi Access Point
hostapd error “nl80211: Could not configure driver mode”
Can’t connect to my access point
“WPA: EAPOL-Key timeout” for certain devices
hostapd, rtl8192se and wpa not working: EAPOL-Key Timeout
WLAN AP Geht wieder nicht
Wifi Problem
WPA/WPA2 Authentication failure – EAPOL-Key timeout

nl80211: New station f8:01:13:05:ef:1f
wlan0: Event EAPOL_TX_STATUS (40) received
IEEE 802.1X: f8:01:13:05:ef:1f TX status - version=2 type=3 length=95 - ack=1
WPA: EAPOL-Key TX status for STA f8:01:13:05:ef:1f ack=1
WPA: Increase initial EAPOL-Key 1/4 timeout by 1000 ms because of acknowledged frame
wlan0: STA f8:01:13:05:ef:1f WPA: EAPOL-Key timeout
WPA: f8:01:13:05:ef:1f WPA_PTK entering state PTKSTART
wlan0: STA f8:01:13:05:ef:1f WPA: sending 1/4 msg of 4-Way Handshake
WPA: Send EAPOL(version=2 secure=0 mic=0 ack=1 install=0 pairwise=1 kde_len=0 keyidx=0 encr=0)
WPA: Use EAPOL-Key timeout of 1000 ms (retry counter 2)
### Wireless network name ###
### Set your bridge name ###

ssid=BACHI.NET Wireless


andreas@samsung-notebook:~$ iw list
Wiphy phy0
	Band 1:
		Capabilities: 0x1072
			Static SM Power Save
			RX Greenfield
			RX HT20 SGI
			RX HT40 SGI
			Max AMSDU length: 3839 bytes
		Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
		Minimum RX AMPDU time spacing: 4 usec (0x05)
		HT TX/RX MCS rate indexes supported: 0-7, 32
			* 2412 MHz [1] (15.0 dBm)
			* 2417 MHz [2] (15.0 dBm)
			* 2422 MHz [3] (15.0 dBm)
			* 2427 MHz [4] (15.0 dBm)
			* 2432 MHz [5] (15.0 dBm)
			* 2437 MHz [6] (15.0 dBm)
			* 2442 MHz [7] (15.0 dBm)
			* 2447 MHz [8] (15.0 dBm)
			* 2452 MHz [9] (15.0 dBm)
			* 2457 MHz [10] (15.0 dBm)
			* 2462 MHz [11] (15.0 dBm)
			* 2467 MHz [12] (15.0 dBm) (passive scanning, no IBSS)
			* 2472 MHz [13] (15.0 dBm) (passive scanning, no IBSS)
		Bitrates (non-HT):
			* 1.0 Mbps
			* 2.0 Mbps (short preamble supported)
			* 5.5 Mbps (short preamble supported)
			* 11.0 Mbps (short preamble supported)
			* 6.0 Mbps
			* 9.0 Mbps
			* 12.0 Mbps
			* 18.0 Mbps
			* 24.0 Mbps
			* 36.0 Mbps
			* 48.0 Mbps
			* 54.0 Mbps
	max # scan SSIDs: 20
	max scan IEs length: 195 bytes
	Coverage class: 0 (up to 0m)
	Supported Ciphers:
		* WEP40 (00-0f-ac:1)
		* WEP104 (00-0f-ac:5)
		* TKIP (00-0f-ac:2)
		* CCMP (00-0f-ac:4)
	Available Antennas: TX 0 RX 0
	Supported interface modes:
		 * IBSS
		 * managed
		 * AP
		 * AP/VLAN
		 * monitor
	software interface modes (can always be added):
		 * AP/VLAN
		 * monitor
	valid interface combinations:
		 * #{ managed } <= 1, #{ AP } <= 1,
		   total <= 2, #channels <= 1, STA/AP BI must match
		 * #{ managed } <= 2,
		   total <= 2, #channels <= 1
	Supported commands:
		 * new_interface
		 * set_interface
		 * new_key
		 * new_beacon
		 * new_station
		 * new_mpath
		 * set_mesh_params
		 * set_bss
		 * authenticate
		 * associate
		 * deauthenticate
		 * disassociate
		 * join_ibss
		 * join_mesh
		 * set_tx_bitrate_mask
		 * action
		 * frame_wait_cancel
		 * set_wiphy_netns
		 * set_channel
		 * set_wds_peer
		 * Unknown command (84)
		 * Unknown command (87)
		 * Unknown command (85)
		 * Unknown command (89)
		 * Unknown command (92)
		 * connect
		 * disconnect
	Supported TX frame types:
		 * IBSS: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
		 * managed: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
		 * AP: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
		 * AP/VLAN: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
		 * mesh point: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
		 * P2P-client: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
		 * P2P-GO: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
		 * Unknown mode (10): 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
	Supported RX frame types:
		 * IBSS: 0x40 0xb0 0xc0 0xd0
		 * managed: 0x40 0xd0
		 * AP: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
		 * AP/VLAN: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
		 * mesh point: 0xb0 0xc0 0xd0
		 * P2P-client: 0x40 0xd0
		 * P2P-GO: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
		 * Unknown mode (10): 0x40 0xd0
	Device supports RSN-IBSS.
	WoWLAN support:
		 * wake up on disconnect
		 * wake up on magic packet
		 * wake up on pattern match, up to 20 patterns of 16-128 bytes
		 * can do GTK rekeying
		 * wake up on GTK rekey failure
		 * wake up on EAP identity request
		 * wake up on rfkill release
	HT Capability overrides:
		 * MCS: ff ff ff ff ff ff ff ff ff ff
		 * maximum A-MSDU length
		 * supported channel width
		 * short GI for 40 MHz
		 * max A-MPDU length exponent
		 * min MPDU start spacing
	Device supports TX status socket option.
	Device supports HT-IBSS.

Linux KVM vs. ioctl

Linux KVM

Kernel Virtual Machine
KVM Documents
KVM (for Kernel-based Virtual Machine) is a full virtualization solution for Linux on x86 hardware containing virtualization extensions (Intel VT or AMD-V). It consists of a loadable kernel module, kvm.ko, that provides the core virtualization infrastructure and a processor specific module, kvm-intel.ko or kvm-amd.ko.

Using KVM, one can run multiple virtual machines running unmodified Linux or Windows images. Each virtual machine has private virtualized hardware: a network card, disk, graphics adapter, etc.


The Definitive KVM (Kernel-based Virtual Machine) API Documentation
The Definitive KVM (Kernel-based Virtual Machine) API Documentation (broken link)

The kvm API is a set of ioctls that are issued to control various aspects of a virtual machine.



IPv6 Adressen

Internet Protocol Version 6 (IPv6) Basics cheat sheet – 20130711 (PDF)
IPv6 Autoconfiguration and Renumbering
IPv6 address
Different methods to assign a Global Unicast IPv6 address to an interface


IPv6 – Proxy the neighbors (or come back ARP – we loved you really)
Things you didn’t known about IPv6 link-local address

Socket Programming

C Language Examples of IPv4 and IPv6 Raw Sockets for Linux
IPv6-tauglich programmieren in C/C++, Python und Perl
Binding Sockets to IPv4 and IPv6

int v6only = 1;
if (ai-&gt;ai_family == AF_INET6 &amp;&amp; setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &amp;v6only, sizeof(v6only)) &lt;  0) {
    /* error */


RFC 1981 Path MTU Discovery for IPv6
RFC 2375 IPv6 Multicast Address Assignments
RFC 2460 IPv6 Specifications
RFC 3587 IPv6 Global Unicast Address Format
RFC 3596 DNS Extensions to Support IP Version 6
RFC 3849 IPv6 Address Prefix For Documentation
RFC 4193 Unique Local IPv6 Unicast Addresses
RFC 4291 IPv6 Addressing Architectures
RFC 4443 ICMPv6 for IPv6
RFC 4861 IPv6 Neighbor Discovery
RFC 4862 IPv6 Stateless Address Configuration
RFC 4941 Privacy Extensions for Stateless Address Autoconfiguration (SLAAC) in IPv6
RFC 6146 Stateful NAT64
RFC 6147 DNS64 – DNS Extensions for NAT64
RFC 6434 IPv6 Node Requirements
RFC 6540 IPv6 Support Required for All IP-Capable Nodes


Resource Reservation Protocol (RSVP)
Resource Reservation Protocol – Traffic Engineering (RSVP-TE)
Quality of Service (QoS)
Integrated Services (IntServ)
Differentiated Services (DiffServ)

Neighbor Discovery Protocol (NDP)

Microsoft IPv6 Neighbor Discovery
Duplicate Address Detection (Slide 36 of presentation)

Link-local address

EUI-64 in IPv6 -> invert the universal/local (U/L) flag (bit 7) in the OUI portion of the address