Tuesday, 3. November 2015 Week 45
I've just added the indexcolor patch to my Mutt 1.5.24 Homebrew Formula.
To use this Formula just type brew tap x-way/mutt followed by brew install x-way/mutt/mutt --with-trash-patch --with-indexcolor-patch to install Mutt 1.5.24 with trash_folder and indexcolor support.
Wednesday, 23. September 2015 Week 39
At work I'm a quite avid user of Mutt. Unfortunately the upgrade to the recently released version 1.5.24 did not go over as smooth as expected.
I'm using Homebrew to install Mutt on Mac OS X, and even though there is an updated version in the official Homebrew repository, it no longer comes with the trash_folder patch (it fails to apply against the 1.5.24 source tree and was thus removed).
In order to build the new Mutt version with the trash_folder support, I updated the patch for version 1.5.24: mutt-1.5.24-trash_folder.diff.
The official Homebrew repository prefers unpatched packages and encourages the creation of independent "Taps" (package repositories) for patched packages. Thus I also created my own Homebrew Tap which contains the 1.5.24 version of Mutt with the updated trash_folder patch: x-way/homebrew-mutt.
To use this Tap just type brew tap x-way/mutt followed by brew install x-way/mutt/mutt --with-trash-patch to install Mutt 1.5.24 with trash_folder support. Cheers!
Saturday, 15. August 2015 Week 33
Puppet Infrastructure 2015
Wednesday, 12. August 2015 Week 33
The Quagga version in Debian 8 (v0.99.23.1) suffers from a bug in ospf6d, which causes that no IPv6 routes are exchanged via point-to-point interfaces.
In order to workaround this problem (and re-establish IPv6 connectivity), a downgrade of the quagga package can be done.
For this we add the 'oldstable' entry to sources.list and pin the quagga package to the old version.
Entry to add to /etc/apt/sources.list:
deb http://mirror.switch.ch/ftp/mirror/debian/ oldstable main
Entry to add to /etc/apt/preferences:
Package: quagga
Pin: version 0.99.22.*
Pin-Priority: 1001
After the entries have been added, run apt-get update followed by apt-get install quagga to downgrade to the old quagga package.
Sunday, 19. July 2015 Week 29
fsociety00.dat
Sunday, 12. July 2015 Week 28
Create packets with custom IPv4 IP Option fields using Scapy:
>>> packet=IP(src="203.0.113.1",dst="203.0.113.2",options=[IPOption('%s%s'%('\x86\x28','a'*38))])
>>> ls(packet)
version : BitField = 4 (4)
ihl : BitField = None (None)
tos : XByteField = 0 (0)
len : ShortField = None (None)
id : ShortField = 1 (1)
flags : FlagsField = 0 (0)
frag : BitField = 0 (0)
ttl : ByteField = 64 (64)
proto : ByteEnumField = 0 (0)
chksum : XShortField = None (None)
src : Emph = '203.0.113.1' (None)
dst : Emph = '203.0.113.2' ('127.0.0.1')
options : PacketListField = [<IPOption copy_flag=1L optclass=control option=commercial_security length=40 value='aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa' |>] ([])
>>> sr1(packet)
The above code results in the following packet (as seen by Wireshark):

Saturday, 11. July 2015 Week 28
To avoid the automatic installation/switch to systemd during the upgrade to Debian 8, it is enough to prevent the installation of the systemd-sysv
package.
This can be done by creating a file /etc/apt/preferences.d/no-systemd-sysv
with the following content:
Package: systemd-sysv
Pin: release o=Debian
Pin-Priority: -1
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Sunday, 5. July 2015 Week 27
So true...

"Obey the cloud!" by Johannes Kretzschmar, licensed under CC BY-NC-SA 3.0.
Tuesday, 24. February 2015 Week 9
The Prodigy - The Day Is My Enemy
Looking forward to see the live performance at the Future Music Festival 2015 :-)
Sunday, 11. January 2015 Week 2

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