Network Operations

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What's ARP Got to Do with It?

Remco van Mook

• 23 Jul 2026

• 9 min read

It's only ARP. It works. So how much can it really matter? The answer lies beyond ARP itself, in the IPv4 layer cake that grew around it over four decades. The IPv4 internet is not going away in bounded time, and nobody should pretend otherwise.

ipv4
ietf
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Inside a Shutdown: BGP Evidence from an Operator Who Was There

Md.Kamruzzaman Khan

• 22 Jul 2026

• 17 min read

When Bangladesh vanished from the global routing table in July 2024, public routing data captured the event as it unfolded. Drawing on first-hand observations from inside one affected network, this article explores what that data can and cannot tell us.

Beyond Origin Validation: Four Classes of Routing Attack Nobody Is Validating

Antonio Prado

• 21 Jul 2026

• 8 min read

RPKI has made real progress against prefix hijacking. But when you map every known class of BGP attack against the defences that exist, four of them turn out to sit entirely outside cryptographic validation: handled with local filters, static thresholds and reactive response.

Who's Running All Those Tiny RPKI Servers?

Ties Dirksen

• 20 Jul 2026

• 18 min read

Who runs the hidden infrastructure behind secure Internet routing? An internship report from SIDN Labs looks beyond the RIRs at the independently operated RPKI publication servers helping to secure BGP.

bgp
rpki
research
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A Farewell to ARPs: IPv4 Service on IPv6-Only Networks

Remco van Mook

• 13 Jul 2026

• 9 min read

IPv6-only networks often still depend on IPv4 subnets and ARP. This article introduces an IETF proposal to eliminate both, allowing IPv4 to operate as a service over IPv6-only infrastructure without translation or tunnelling.

ipv4
ipv6
ietf
+1
+1

A pair of birds common in the Vienna region facing each other while sitting on a branch.

Birds of a Feather at IETF 126 Vienna

Greg Wood

• 8 Jul 2026

• 5 min read

The IETF 126 Vienna meeting takes place 18–24 July 2026. As at every IETF meeting, alongside the established Working Groups there will be a handful of Birds-of-a-Feather (BoF) sessions - and these are often the most interesting place to watch where Internet standards work is heading next.

When Internet Traffic Becomes a Physical Event

Flavio Luciani

• 6 Jul 2026

• 8 min read

Why do live sports, ticket sales, and public service launches sometimes resemble DDoS attacks? This article explores how synchronised user behaviour turns Internet traffic into a physical phenomenon that places real pressure on network infrastructure.

events
routing
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RIPE NCC Days Baltics: Insights into Regional Resilience

Kjerstin Burdiek

• 30 Jun 2026

• 14 min read

On 3-4 June 2026, we convened in Riga, Latvia for RIPE NCC Days Baltics. 76 participants from nine countries participated in sessions covering important topics in network operations, with a special focus on resilience for a region that has seen repeated network disruptions in recent years.

rpki
ipv6
ripe
routing
+5
+4

ASPA Is Live. Can You See It Working?

Ritesh Mukherjee

• 29 Jun 2026

• 9 min read

ASPA objects can be registered today with ARIN and RIPE NCC. Validators support RTR v2. But if you're an operator, can you actually see what ASPA is doing - or would do - on your network? We built a tool to find out.

IPv6-Only vs IPv6-Mostly: Appropriate Use Cases

Jordi Palet Martinez

• 24 Jun 2026

• 9 min read

Not all IPv6 deployment models belong in the same flock. IPv6-Only and IPv6-Mostly are often discussed as if they were interchangeable, but each was designed for different environments. This article explores why matching the right approach to the right use case matters.

ipv6
ietf

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