Yes. It’s exactly that easy. Since the NH is only used to resolve a port and (possibly) a MAC address, having IPv6 NLRI on an IPv4 route is no problem. Of course that only applies to routes where the NLRI is the adjacent advertising router. Owen
On Sep 4, 2026, at 11:38, Brian Knight <ml@knight-networks.com> wrote:
Never mind the knowledge gaps in supporting and managing this, systems updates to handle this, educating customers on how to deploy, etc.
I have never heard of something like this being deployed on IP circuits.
From a configuration standpoint, without testing it, is it as easy as configuring an IPV6 BGP neighbor with an IPV4 unicast AFI/SAFI? And the received routes appear in the table with an IPV6 NH?
-Brian
On 2026-09-04 12:23, Owen DeLong via NANOG wrote: This will only increase as IPv4 becomes more and more stupid. I would approach any provider that did so asking if we can simply transit our IPv4 routing process over v6 addresses. This is viable on virtually every common routing platform today. Owen
On Sep 4, 2026, at 09:37, Mike Hammett via NANOG <nanog@lists.nanog.org> wrote: I'm not going to say no. ----- Mike Hammett FD-IX https://fd-ix.com/ DNA Communications https://www.dnacom.com/ From: "Josh Luthman" <josh@imaginenetworksllc.com> To: "North American Network Operators Group" <nanog@lists.nanog.org> Cc: "Mike Hammett" <nanog@ics-il.net> Sent: Friday, September 4, 2026 11:32 AM Subject: Re: Charging for IPs Cogent? On Fri, Sep 4, 2026, 12:30 PM Mike Hammett via NANOG <nanog@lists.nanog.org> wrote: Has anyone else experienced an upstream provider that wants to charge you for the IPs you need to establish BGP sessions? I understand charging for large blocks, but I literally just got a quote for two /31s. I have an existing contract elsewhere with them, and they gave me 3x /29s gratis (for three different ASNs, sets of BGP sessions, ec.). Now they're charging for each IP. I thought charging for BGP sessions was ridiculous, but now for individual IPs to use those BGP sessions... ----- Mike Hammett FD-IX https://fd-ix.com/ DNA Communications https://www.dnacom.com/
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