this post was submitted on 23 Oct 2025
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That and BGP
If I had a nickel for every time clearing the ARP tables fixed a problem, I'd have a shitload of nickels.
If clearing the ARP tables fixes the issue you have bigger problems
These things happen when a skinflint company contracts out network setup for a decade, gets acquired by another skinflint company who axes the contractors and doesn't hire on-site network personnel, gradually builds out infra on top of the unsupported foundation, and then hires c suite buddies who want to bring in their own people to further muddy the waters.
Like every MSP ever. When your CEO that started the company in college suddenly shows up in a green Lamborghini it is time to spruce up the resume.