<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div dir="ltr"></div><div dir="ltr">Apologies. It’s provider assignment unit, not provider allocation unit and is defined in 2.15. </div><div dir="ltr"><br></div><div dir="ltr"><h3 id="2-15-provider-assignment-unit-ipv6" style="box-sizing: border-box; margin-top: 0px; margin-bottom: 0.5rem; font-weight: 500; line-height: 1.2; color: rgb(0, 45, 56); font-size: calc(1.2825rem + 0.39vw); font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", "Liberation Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); -webkit-text-size-adjust: 100%;">2.15. Provider Assignment Unit (IPv6)</h3><p style="font-size: 16px; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; overflow-wrap: break-word; line-height: 1.5; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", "Liberation Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); -webkit-text-size-adjust: 100%;">When applied to IPv6 policies, the term “provider assignment unit” shall mean the prefix of the smallest block a given ISP assigns to end sites (recommended /48).</p><p style="font-size: 16px; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; overflow-wrap: break-word; line-height: 1.5; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", "Liberation Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); -webkit-text-size-adjust: 100%;"><br></p><p style="font-size: 16px; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; overflow-wrap: break-word; line-height: 1.5; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", "Liberation Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); -webkit-text-size-adjust: 100%;">Owen</p><p style="font-size: 16px; box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; overflow-wrap: break-word; line-height: 1.5; caret-color: rgb(51, 51, 51); color: rgb(51, 51, 51); font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", "Liberation Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); -webkit-text-size-adjust: 100%;"><br></p></div><div dir="ltr"><br><blockquote type="cite">On Jul 14, 2025, at 11:16, William Herrin <bill@herrin.us> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><span>On Mon, Jul 14, 2025 at 7:49 AM Owen DeLong <owen@delong.com> wrote:</span><br><blockquote type="cite"><span>Assuming /48 as the PAU is not true to the policy. The policy was intended to encourage LIR/ISPs to implement /48 PAUs by limiting the size of allocations to providers that issued smaller end site allocations.</span><br></blockquote><span></span><br><span></span><br><span>Hi Owen,</span><br><span></span><br><span>I note that "provider allocation unit" or "PAU" is not defined in the</span><br><span>NRPM or in any other standards document I've been able to find with a</span><br><span>quick google search.</span><br><span></span><br><span>Regards,</span><br><span>Bill Herrin</span><br><span></span><br><span></span><br><span>-- </span><br><span>William Herrin</span><br><span>bill@herrin.us</span><br><span>https://bill.herrin.us/</span><br></div></blockquote></body></html>