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Yes, it is bad practice. Yes, it's polluting the route table.<br>
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If the # of /24s involved is not ridiculously large (say, <64?) them I would go ahead, as long as IRR and/or RPKI are also updated.</div>
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Obviously if everyone did it (i.e. advertising /24s exclusively) then our FIBs would collectively balloon to a grotesquely un-manageable size, at least on platforms that can't auto-aggregate that back down. Thankfully, everyone isn't doing it.</div>
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I, too, would vastly prefer no-one did this, but I have two customers that demand it from time to time... and we've even done it for our own allocation sometimes, and there's no robust, never mind bullet-proof, technical argument why I can't do that for them
(or for ourselves). OTOH robust arguments exist for why it's a good thing to do - sometimes, and temporarily.<br>
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<span class="hs_cos_wrapper hs_cos_wrapper_meta_field hs_cos_wrapper_type_rich_text" data-hs-cos-general-type="meta_field" data-hs-cos-type="rich_text">¯\_(ツ)_/¯</span></div>
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-Adam<br>
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<b style="text-align:start; background-color:rgb(255,255,255)"><span style="margin:0px; font-size:10pt; color:rgb(68,84,106)">Adam Thompson</span></b><span style="margin:0px; font-size:9pt; color:rgb(68,84,106); text-align:start; background-color:rgb(255,255,255)"><br>
Consultant, Infrastructure Services<br>
<img class="EmojiInsert" alt="1593169877849" style="margin:0px; max-width:100%; height:auto" data-outlook-trace="F:2|T:2" src="cid:b36e481b-6cb4-4140-9eb0-9aaee66b51e2"><br>
100 - 135 Innovation Drive<br>
Winnipeg, MB, R3T 6A8<br>
(204) 977-6824 or 1-800-430-6404 (MB only)<br>
<a href="mailto:athompson@merlin.mb.ca" target="_blank" rel="noopener noreferrer" style="margin:0px"><span style="margin:0px">athompson@merlin.mb.ca</span></a><br>
<a href="http://www.merlin.mb.ca/" target="_blank" rel="noopener noreferrer" style="margin:0px"><span style="margin:0px">www.merlin.mb.ca</span></a></span><br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> NANOG <nanog-bounces+athompson=merlin.mb.ca@nanog.org> on behalf of Billy Croan <BCroan@unrealservers.net><br>
<b>Sent:</b> August 9, 2021 10:47<br>
<b>To:</b> nanog list <nanog@nanog.org><br>
<b>Subject:</b> "Tactical" /24 announcements</font>
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<div class="PlainText">How does the community feel about using /24 originations in BGP as a<br>
tactical advantage against potential bgp hijackers?<br>
<br>
All of our allocations are larger and those prefixes we announce for<br>
clients as well usually are. But we had a request recently to<br>
originate everything as distinct /24 prefixes, to reduce the effect of<br>
a potential bgp hijack. It seemed a little bit like a tragedy of the<br>
commons situation.<br>
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Is this seen as route table pollution, or a necessary evil in today's world?<br>
How many routers out there today would be affected if everyone did this?<br>
Are there any big networks that drop or penalize announcements like this?<br>
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