On Thu, 24 Feb 2022 22:14:19 +0100
aitor <aitor_czr@???> wrote:

> Only the netinst image requires network connection. This image
> contains just the minimal amount of packages to install the base
> system; from thereon the remaining packages are installed over the
> internet.

If you want an up-to-date offline system, I guess that, with un pocito
de pinning magic, getting and adding these isos to your 'sources.list'
would do the trick as well:

a443d354b1ab710d5f62d826b690c4c83d6c457319ab2cad4940d6094517f1fa46f7cfb21ed7514b53556ebc72ad30d5626e44723a19e2f1de8dbc7d164b4af4 debian-11.2.0-amd64-DVD-1.iso
f1dd1df202e9d8c47ea06f35234565811deba5675c30b60c353c4dabc6fa4f14b616aa14ddb7fd135084d58f3b1d3cd207e20b18fe6b23b1b4a3e8e346a3a930 debian-11.2.0-amd64-DVD-10.iso
ed119b9d6e2c785e59123a4c3602d4c9c68ab93b0e1005864de47750c253cf27dcf55eba68158a5dbdaa638419a321e21558394343f5464a6c70b07e91ccdc0b debian-11.2.0-amd64-DVD-11.iso
4a41834d3dd6a2aee4965774a7ae7db6cb8645432e197e39cc62c95103128acd3252fe390ebac45502d014963aa0b642947b545fbc65eff6f8e828ed5d734e5c debian-11.2.0-amd64-DVD-12.iso
12fa9611b1e5906af90333ca931972c0a9af0abadc3f861c4267b240796fbdaabfe0c0fbe2991afcccf622ebd3abb6c4357ea55d57fe8caa863742888e8320e5 debian-11.2.0-amd64-DVD-13.iso
88e3a41ff726d661452999b7d0006985a8b656ae538cbaab9c6cac2981f32ac2ea50365560eae159c6c1031875c633aaf97ac738a266fea0c840bd4478ef808e debian-11.2.0-amd64-DVD-14.iso
08e302100dca8026b96c5bf7980aeab6e945587ea6f88b424828c7d2ddf7abc4836ba753107e7659b48963798076daec62c3f06cfa9c02385bbf231fafcb451a debian-11.2.0-amd64-DVD-15.iso
2ce11ed49875d1e6f7cb91dfd75515b913812fabee9cf861ae29f598ebdb163eadc8a5cb25326fe072c50ec49ac205092859683c40df7627e456c118cec7bd80 debian-11.2.0-amd64-DVD-16.iso
dfba41636dc98f9e103c3c971df1d6d058545b2b46bf032d1e885c181ad2fa82cb51d56a6636a7a3919e1496d0f1403a7ddb897b18692dfc977c26a8f923d7b9 debian-11.2.0-amd64-DVD-17.iso
904b6313099f8ed764c420309190e84984f096f0f016ae445a1232e256b3b63c5de841e39383e5d20dad2e6f5b9b4242b2d9dd9fc91a9ef984ee966a74a61aea debian-11.2.0-amd64-DVD-18.iso
bbc49e9d466d2db291777a9e9171a5eab31dcbe298398a954bc01f3550be6a4a1a1b72ce9bccb4e0535cef51a6f4c41c18a300a48400a12760823553fca2e100 debian-11.2.0-amd64-DVD-19.iso
67706dfce00197e317d532bf2396d806eb3f53e84fee962ba0cb9792ae097fd02026446e32d910d0cac3e865cf121846a4229252f263581a9157c64e1e04be6a debian-11.2.0-amd64-DVD-2.iso
2a3bb7a64eb3fab3f469ca09d95f876af59aa7e2d8bc624457ce4f29d9b42dd2e916f7441fe555ea6926f9f6d4cd2dd64086e454223f0d7c02c13b11bf3df9a9 debian-11.2.0-amd64-DVD-3.iso
9650bfda457d1d242528869880e80b1942cb20feebfc4d0263d5e3ea647e338c7cc94de46ddc6005d186572b9ee4e455763b6b69b8e346083f3deb5a0773e7ee debian-11.2.0-amd64-DVD-4.iso
15f0e922c171d9152c4bcb3c24fdbe28af3311ea4f31320a76a1618d80fcf4d4214f2fe28f7656e4febe642974205e207d56559a7f757d3f3eeba20d8d38640f debian-11.2.0-amd64-DVD-5.iso
f29e3b05f1f9a153d3b890080d776acab5e55cfa32b0cbee2db87cc2e58f3603ccb42923d516380ca9754be15df3973d2eaa918acdfefcc1dcd49c963345e09a debian-11.2.0-amd64-DVD-6.iso
6aedb5ba84da9db6fa9e11cd4c5947c3c81f012efc078c3e79a27efe0c885b2a02ac35e5274def0f1a4e4411b461c7f8e1606e017b0bfacba9f1b7002cdb3773 debian-11.2.0-amd64-DVD-7.iso
5ca6fab071d24a66a73096a6ab2955b4e8292b3d520d967bb94f07490de419eca2927e57a79f2920d414d1f19892bded48eeffa7ad809075f20e314dccd9b683 debian-11.2.0-amd64-DVD-8.iso
a1ccb124e26b4f4ba73dcea146edb7c77ef8da31e58adc1fe6a74a4e8bdfa66f70e22fdb9b291489192b5961815384e3be119baa38abd0bc9be571cc715a5f1d debian-11.2.0-amd64-DVD-9.iso

/troll mode
& libre Grüße
f.