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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for March 15th, 2016

Bug squasing: A heisenbug is not your average bug.

Posted by jpluimers on 2016/03/15

I took the liberty to make an English translation of this very interesting German story about squasing an Heisenbug from Kristian KöhntoppHeisenbugsquashing bei +SysEleven: Sechs Monate Kernels crashen, aber jetzt isser tot….

Don’t forget to read (translated) comments in the original thread. Very interesting read!

I agree it’s in the Heisenbug category given “Time can also be a factor in heisenbugs, particularly with multi-threaded applications.”.

Anyway, the translation and original:

English:

Read the rest of this entry »

Posted in Debugging, Development, Software Development | Leave a Comment »

Fritz!Box 7360 and 7490: static routes over VPN don’t work

Posted by jpluimers on 2016/03/15

I’ve tried the below on a Fritz!Box 7490 configuration and it fails as well.

The case is that I’ve a VPN (see Getting Fritz!Box LAN-LAN VPN to work) between a Fritz!Box 7360 (having internal IP 192.168.24.1) and a Fritz!Box 7490 (having internal IP 192.168.71.1). This is how it looks from the Fritz!Box 7360 side:

Name Address in the Internet local network remote network
80.100.143.119 80.100.143.119 192.168.24.0/24 192.168.171.0/24

On the 192.168.171.0/24 side of things, the internal IP of the 80.100.143.119 router is 192.168.171.1. Inside the 192.168.171.0/24 network is is another router (192.168.171.22) having an internal 192.168.71.0/24 network.

Basically I want to tell the Fritz!Box 7360 (at IP 192.168.24.1) that there is an internal route to 192.168.71.0/24 via 192.168.171.22.

I found and read Accessing multiple IP networks behind a FRITZ!Box over VPN connection between two FRITZ!Boxes | FRITZ!Box 7360 | AVM International.

Based on it, I wanted to add this route on the 192.168.24.1:

Static IPv4 Route

IPv4 network 192.168.71.0
Subnet mask 255.255.255.0
Gateway 192.168.171.22
Enabled X

When you do that, you get this error message:

An error occurred.
Error description: The route is illegal.
Please enter your data again. If the error occurs again, please consult AVM Support.

How can I get this route to work?

–jeroen

Posted in Fritz!, Fritz!Box, Internet, Power User | Leave a Comment »

git-extras/Commands.md at master · tj/git-extras

Posted by jpluimers on 2016/03/15

git-extras is awesome: it adds many useful commands to git. Like git ignore and git-info.

For instance, this adds README.md~ to the .gitignore file:

git ignore README.md~

It makes command-line git much more usable, even so much that it lessens the needs of SourceTree and other UIs tools.

You can get it at the GitHub repository tj/git-extras.

Lots of help is at git-extras/Commands.md: it explains all the commands that git-extras adds.

Thanks nifr for posting about git-extras at Is there an ignore command for git like there is for svn? – Stack Overflow.

–jeroen

 

Posted in Development, DVCS - Distributed Version Control, git, GitHub, Software Development, Source Code Management, SourceTree | Leave a Comment »

 
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