Journal
Networking
Notes in Networking — written like an editor, not a keyword farm.
Networking · August 17, 2026
BGP communities in plain language
BGP communities are labels attached to route announcements. They let a network signal preferences to its peers and customers without rewriting the entire policy language every time. For someone leasing IPs or running a small ASN, a few communities can control how traffic enters a…
Networking · August 10, 2026
IPv6 on VPS in 2026: what still breaks
Most VPS providers now offer IPv6. Dual-stack is common. Full IPv6-only deployments remain rare for general-purpose hosting because too many dependencies still assume IPv4. What works Basic web traffic over IPv6 when the client and the path support it. SSH and most modern applica…
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Networking · August 9, 2026
Anycast for small hosts: when it actually helps
Anycast announces the same IP prefix from multiple locations so traffic is routed to a nearby instance. For large CDNs and DNS providers it is foundational. For a small host the question is whether the benefit justifies the complexity and cost. Where anycast clearly helps Authori…
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Networking · August 8, 2026
IPv4 leasing in 2026: rates, LOAs, and the tickets that come with them
IPv4 is still scarce and still necessary for a large share of the workloads that land on a host. Leasing has become the default way many operators obtain space without the capital cost of a transfer. In 2026 lease rates on major platforms sit roughly in the $0.35–$0.55 per IP per…
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Networking · August 7, 2026
RPKI, IRR, and why some routes still get filtered in 2026
RPKI is the cryptographic answer to “who is allowed to announce this prefix.” IRR objects are the older, still-used database answer. In 2026 both still matter, and the absence of either still causes routes to be filtered by networks that care about routing hygiene. What we see in…
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