I have been trying to capture LLDP packets using tcpdump on my Ubuntu machine, but I am having some trouble. I have followed the code that was mentioned in the post (https://stackoverflow.com/questions/18095812/capture-lldp-packets-using-tcpdump), but for some reason it doesn’t seem to ...Read more
I have been trying to capture LLDP packets using tcpdump on my Ubuntu machine, but I am having some trouble. I have followed the code that was mentioned in the post (https://stackoverflow.com/questions/18095812/capture-lldp-packets-using-tcpdump), but for some reason it doesn’t seem to be working. I’ve tried different variations of the command, but nothing seems to be working.
Here’s the command that I’m using:
sudo tcpdump -vvvv -i eth0 -s 1500 -c 1 'ether[20:2] == 0x88cc'
I’ve also tried using just sudo tcpdump without any options, but still no success. Could anyone tell me what I’m doing wrong? Is there an issue with my command? Or is there something I need to install or configure on my machine to make it work?
One thing that I’ve noticed is that when I run the command, it seems to just hang indefinitely without producing any output. I’m not sure if this is normal or not. Any help would be greatly appreciated. Thank you!
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The error "libpng warning iccp known incorrect sRGB profile" usually occurs when an image has an incorrect profile. To resolve this issue, open the image using a photo editing software and make sure it is saved without any color profile or with a proper sRGB color profile. Sometimes this error is alRead more
The error “libpng warning iccp known incorrect sRGB profile” usually occurs when an image has an incorrect profile. To resolve this issue, open the image using a photo editing software and make sure it is saved without any color profile or with a proper sRGB color profile.
See lessSometimes this error is also generated because the image is missing a profile, so to fix this, you can set the color profile of your image before saving it. This can be done using a photo editing software or command-line tools like ImageMagick.
In my personal experience, I had encountered this error while working on a web project. I had to make sure that all the images used on my website were optimized and saved with the correct color profile. This helps in reducing the page load time while maintaining the color quality of the images.
To troubleshoot this error, it is also recommended to check if your code is properly handling the image files and loading them in the correct format. Sometimes, the issue may not be with the image itself but with the way it is being processed and loaded. By following these steps and practices, you can avoid this error and ensure that all the images on your website or application are displayed correctly.