From nobody Thu Nov 18 05:48:35 2021 X-Original-To: freebsd-questions@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 1CDB41836F35 for ; Thu, 18 Nov 2021 05:49:21 +0000 (UTC) (envelope-from dewayne@heuristicsystems.com.au) Received: from heuristicsystems.com.au (hermes.heuristicsystems.com.au [203.41.22.115]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2560 bits) client-digest SHA256) (Client CN "hermes.heuristicsystems.com.au", Issuer "Heuristic Systems Type 4 Host CA" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4HvplL2xkcz3FCx for ; Thu, 18 Nov 2021 05:49:18 +0000 (UTC) (envelope-from dewayne@heuristicsystems.com.au) Received: from [10.0.5.3] (noddy.hs [10.0.5.3]) (authenticated bits=0) by heuristicsystems.com.au (8.15.2/8.15.2) with ESMTPSA id 1AI5mw6E046519 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT) for ; Thu, 18 Nov 2021 16:48:59 +1100 (AEDT) (envelope-from dewayne@heuristicsystems.com.au) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=heuristicsystems.com.au; s=hsa; t=1637214539; x=1637819340; bh=+j3iImcwx0+QkWn5+jGcH75YPjf1GDsyhlXwyQRXwzk=; h=Message-ID:Date:From:Subject:To; b=MuvUNBDdjZT0piSvMJh3oiNch86U0d5LT09jOw8oIlc2kioiiV9aPL3102NtbHW1z ca9m7KleB/6i9iom/OsfHo3tVTsr4vkvns2ItkayO06uomMjNABXKeMBTQ35TarflD ftlcMlnaAlBtkg2PABv5iuoSFMdkcrJHIH4iyfcDniMo6aBy0RYig X-Authentication-Warning: b3.hs: Host noddy.hs [10.0.5.3] claimed to be [10.0.5.3] Message-ID: Date: Thu, 18 Nov 2021 16:48:35 +1100 List-Id: User questions List-Archive: https://lists.freebsd.org/archives/freebsd-questions List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-questions@freebsd.org X-BeenThere: freebsd-questions@freebsd.org MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:91.0) Gecko/20100101 Thunderbird/91.1.2 Content-Language: en-GB From: Dewayne Geraghty Subject: IETF proposal to unicast 127.1/16 - should we be concerned? To: "freebsd-questions@freebsd.org" Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 4HvplL2xkcz3FCx X-Spamd-Bar: ---- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=heuristicsystems.com.au header.s=hsa header.b=MuvUNBDd; dmarc=none; spf=pass (mx1.freebsd.org: domain of dewayne@heuristicsystems.com.au designates 203.41.22.115 as permitted sender) smtp.mailfrom=dewayne@heuristicsystems.com.au X-Spamd-Result: default: False [-4.97 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; R_SPF_ALLOW(-0.20)[+mx]; HAS_XAW(0.00)[]; RCVD_DKIM_ARC_DNSWL_MED(-0.50)[]; RCVD_IN_DNSWL_MED(-0.20)[203.41.22.115:from]; DKIM_TRACE(0.00)[heuristicsystems.com.au:+]; NEURAL_HAM_SHORT(-0.77)[-0.771]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; SUBJECT_ENDS_QUESTION(1.00)[]; ASN(0.00)[asn:1221, ipnet:203.40.0.0/13, country:AU]; MID_RHS_MATCH_FROM(0.00)[]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; R_DKIM_ALLOW(-0.20)[heuristicsystems.com.au:s=hsa]; FROM_HAS_DN(0.00)[]; DWL_DNSWL_MED(-2.00)[heuristicsystems.com.au:dkim]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-questions@freebsd.org]; DMARC_NA(0.00)[heuristicsystems.com.au]; RCPT_COUNT_ONE(0.00)[1]; TO_DN_EQ_ADDR_ALL(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[] X-ThisMailContainsUnwantedMimeParts: N As this is an individual proposal within the IETF framework, the concern should be tempered, however the draft proposal for 127.1/16 to be routable is being discussed. Refer:  https://www.ietf.org/id/draft-schoen-intarea-unicast-127-00.html For me this is inappropriate and likely to be blocked by very many firewall configurations.  I also use 127/8 for my various jails which need to be factored in. There is also a (2 hr) youtube presentation dated 10-Nov-2021 which includes discussion of this proposal, as well as proposals to  release 240/4 &  0/8 except 0.0.0.0 for unicast.  Relevant to this  discussion: from 8min-22min https://www.youtube.com/watch?v=cqPVdBvgiXI&t=449s or https://www.youtube.com/watch?v=cqPVdBvgiXI&t=1039s If you wish to express your view then I'd suggest referencing: https://datatracker.ietf.org/wg/intarea/email/ but for the moment I'm curious as to the considered opinion of others. Regards, Dewayne