Date: Fri, 17 Jan 2020 22:10:59 +0700 From: Victor Sudakov <vas@sibptus.ru> To: "Andrey V. Elsukov" <bu7cher@yandex.ru> Cc: Eugene Grosbein <eugen@grosbein.net>, freebsd-net@freebsd.org, Michael Tuexen <tuexen@freebsd.org> Subject: Re: IPSec transport mode, mtu, fragmentation... Message-ID: <20200117151059.GC66677@admin.sibptus.ru> In-Reply-To: <6ace842b-69b7-7f0f-43ed-7f7df5c640d5@yandex.ru> References: <20191220152314.GA55278@admin.sibptus.ru> <4cc83b85-dd30-8c0d-330e-aa549ce98c98@yandex.ru> <f9b7357e-ced1-4ce5-40d5-8e3dcad42442@yandex.ru> <d263a709-63cf-7da5-1747-8a6791f6503f@grosbein.net> <20200116155305.GA465@admin.sibptus.ru> <55f7bafa-24c4-9810-0d21-f82cb332ee2d@grosbein.net> <20200116160745.GA1356@admin.sibptus.ru> <97b07801-da80-0665-aaa9-57184a52ce0f@yandex.ru> <6ace842b-69b7-7f0f-43ed-7f7df5c640d5@yandex.ru>
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--pAwQNkOnpTn9IO2O Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Andrey V. Elsukov wrote: > On 16.01.2020 19:36, Andrey V. Elsukov wrote: > > For transport mode inner and outer headers will be the same. > > I guess the problem can be reproduced in the lab using the following co= nfig: > >=20 > > [Host A] <--> [Router] <--> [Host B] > >=20 > > IPsec should be configured between hosts A and B. Then you need to > > reduce MTU on the router. This should lead to ICMP NEEDFRAG messages > > from the router, and then host should correctly handle them. >=20 > I have tested this scenario, and it doesn't work. So, I will report back > when there will be some working solution. By "it doesn't work" you mean everything is suddenly fine and good? :-) --=20 Victor Sudakov, VAS4-RIPE, VAS47-RIPN 2:5005/49@fidonet http://vas.tomsk.ru/ --pAwQNkOnpTn9IO2O Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEcBAEBAgAGBQJeIc6DAAoJEA2k8lmbXsY0n5IH/iSuFJK7Y0mPoTRRb2Ju/2eh Zaig9o99NKwdMGLanBOJ4hzrmngbdqmp372j9Nv5ia5BKINmCpuRcUWJKA+yA5mi Koz8n25Ubrnsc9aZtn/tpa2WDttc618xTZZNx47c8OlOYUelQgLDgFaCMwqQdSJt spJMELCdSkDeIXwGcU695jtsaUb0ImIOuBJUNmuJXt64PoI2993AOnzZkIEtYLFJ jabLLeHCXMwlaUxDhoCN0pYdWgyjO3z+0IUfdZts3Qoc7nPKgBinPyJrO46o1Ie/ eRAkM/GImYxISC2fkxEOpP+lINNb3nD68jD5Px0nDvNuY/WMcdDBip76PSKnXzo= =fl1B -----END PGP SIGNATURE----- --pAwQNkOnpTn9IO2O--
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