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[69.159.36.102]) by smtp.gmail.com with ESMTPSA id y16sm8475267ion.64.2019.03.26.15.16.53 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 26 Mar 2019 15:16:53 -0700 (PDT) Sender: Mark Johnston Date: Tue, 26 Mar 2019 18:16:49 -0400 From: Mark Johnston To: Hans Fiedler Cc: freebsd-stable@freebsd.org Subject: Re: ICMP timestamps Message-ID: <20190326221649.GA8512@raichu> References: <20190326213158.GA87425@mongo.hfconsulting.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190326213158.GA87425@mongo.hfconsulting.com> User-Agent: Mutt/1.11.4 (2019-03-13) X-Rspamd-Queue-Id: D8528893FB X-Spamd-Bar: ----- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=A/s+LD5r; spf=pass (mx1.freebsd.org: domain of markjdb@gmail.com designates 2607:f8b0:4864:20::133 as permitted sender) smtp.mailfrom=markjdb@gmail.com X-Spamd-Result: default: False [-5.38 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; TO_DN_SOME(0.00)[]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; RCVD_COUNT_THREE(0.00)[3]; DKIM_TRACE(0.00)[gmail.com:+]; RCPT_COUNT_TWO(0.00)[2]; MX_GOOD(-0.01)[cached: alt3.gmail-smtp-in.l.google.com]; FORGED_SENDER(0.30)[markj@freebsd.org,markjdb@gmail.com]; MIME_TRACE(0.00)[0:+]; RCVD_TLS_LAST(0.00)[]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; FROM_NEQ_ENVFROM(0.00)[markj@freebsd.org,markjdb@gmail.com]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; FROM_HAS_DN(0.00)[]; NEURAL_HAM_SHORT(-0.94)[-0.939,0]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-stable@freebsd.org]; DMARC_NA(0.00)[freebsd.org]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[3.3.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.4.6.8.4.0.b.8.f.7.0.6.2.list.dnswl.org : 127.0.5.0]; IP_SCORE(-2.73)[ip: (-8.61), ipnet: 2607:f8b0::/32(-2.85), asn: 15169(-2.14), country: US(-0.07)]; MID_RHS_NOT_FQDN(0.50)[] X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 26 Mar 2019 22:16:56 -0000 On Tue, Mar 26, 2019 at 05:31:58PM -0400, Hans Fiedler wrote: > I did a freebsd-update from 11.2 to 12.0. I had set the sysctl variable > net.inet.icmp.tstamprepl to 0 in 11.2 to block the ICMP timestamp > responses, but doesn't seem to work on 12.0. I wanted to ask in I was > missing something else after searching for any other values that should > effect it. This was a problem in the tstamprepl definition that was exposed when VNET was enabled by default in the kernel. It's now fixed in head by r345560 and will be merged back to the stable branches in the next several days.