From owner-freebsd-net@FreeBSD.ORG Tue Jan 24 05:40:55 2012 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 39C07106566C for ; Tue, 24 Jan 2012 05:40:55 +0000 (UTC) (envelope-from rejithomas.d@gmail.com) Received: from mail-gy0-f182.google.com (mail-gy0-f182.google.com [209.85.160.182]) by mx1.freebsd.org (Postfix) with ESMTP id EC1F78FC0C for ; Tue, 24 Jan 2012 05:40:54 +0000 (UTC) Received: by ghbg15 with SMTP id g15so276743ghb.13 for ; Mon, 23 Jan 2012 21:40:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; bh=uyZyUAGFgNK50wePCvuGSLEwtuGVZyY8R9G7pB3rlk0=; b=tPUOSXIij7tSoUzIzh2LDaUE7AxyLrmSUMTtLH+RYx8nYdXENvGa7nW2fg00Yob2De uo/Rh6nXwqlYk3slzCCdaFtqvRWCDMcYeQ7Mr2c6p7m+0CuTbQh2dMREt87PSDYVLMNg Yt8iYCeIOAM5C27UldmCQ3rowskvdIv3J4l+A= MIME-Version: 1.0 Received: by 10.236.165.6 with SMTP id d6mr15400918yhl.44.1327381966013; Mon, 23 Jan 2012 21:12:46 -0800 (PST) Received: by 10.147.51.17 with HTTP; Mon, 23 Jan 2012 21:12:45 -0800 (PST) Date: Tue, 24 Jan 2012 10:42:45 +0530 Message-ID: From: Reji Thomas To: freebsd-net@freebsd.org X-Mailman-Approved-At: Tue, 24 Jan 2012 05:49:44 +0000 Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Subject: Doubt regarding ICMP_UNREACH_NEEDFRAG processing for IPSec X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 24 Jan 2012 05:40:55 -0000 Hi, I dont see the freebsd ip stack processing ICMP_UNREACH_NEEDFRAG where protocol is ESP/AH. ( The ipsec4_common_ctlinput is not implemented). If this is right, how is the PMTU discovery done for ipsec traffic or is it that freebsd is not doing that?. Thanks Reji