From owner-freebsd-virtualization@freebsd.org Fri Oct 23 23:41:35 2020 Return-Path: Delivered-To: freebsd-virtualization@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id E5A454292A3 for ; Fri, 23 Oct 2020 23:41:35 +0000 (UTC) (envelope-from jtubnor@gmail.com) Received: from mail-wm1-f50.google.com (mail-wm1-f50.google.com [209.85.128.50]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4CJ1330NLWz3TkP for ; Fri, 23 Oct 2020 23:41:34 +0000 (UTC) (envelope-from jtubnor@gmail.com) Received: by mail-wm1-f50.google.com with SMTP id c194so3915365wme.2 for ; Fri, 23 Oct 2020 16:41:34 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=vzwHNq0BG2e0FjLVjLmtniipsdfSNxkz/iElXN93sF4=; b=biCfCnLRPXM8rK7m8ez3o3zM/Umfwse+NjohTp7Wz4nE2VyElLZIiGZoz6/DWxN8c2 U0pCtoNZnWTAnbFAk+VLvj2vY4sx/w/mI9I0R9KjjdgqLSmfq3yGem78W14EAiOyofaY MMldKI5Cu+y5if+KPFSLDqC2E1VEGgJ6pZ1z8shFxDuMEMEKndvVeXH5ruYc/23PNJTL +V+mhb8B1+71fVeY1j+2NYJbJMl4HiAXONTsp6xXKtc28s4cp+8VokDQtzl7WCUoYBKB 8CGNndS4LbPFU+BK+LroFps52yqGrTDaUmx34MDDBr0pqMktiMQu3ZTVX6ICzakL5JKf zmMw== X-Gm-Message-State: AOAM530vfDwO41xtyWswsrWFvnaMgBemzYbgzARwPN4TJHaSZ6Jqf2Em BApZNPsu2U52xHjoSmjanEVkv02ngwYB2ESCTKw= X-Google-Smtp-Source: ABdhPJwHJmUu8gXniQVhKoK3x3RbGPxB/ere4IkqFdwLzy+MVsLRS0+x9xsCiinSo6VkDbADDCfkBBpyaqKpouGhI2E= X-Received: by 2002:a1c:9641:: with SMTP id y62mr4666335wmd.145.1603496493206; Fri, 23 Oct 2020 16:41:33 -0700 (PDT) MIME-Version: 1.0 References: <57c32e6d-5572-3d3b-1a57-f3064bee7dc2@druid.net> <20201020065630.GE8272@funkthat.com> <3ed627e2-d99a-107e-4135-8aef1ad4ec71@druid.net> <30A67F82-312E-4651-A5E7-2E2AD926FF24@punkt.de> <973b1b56-817f-6976-e5d3-34cfbc373b13@druid.net> <723CA318-80E9-4A6B-91ED-E791A40CC2C0@punkt.de> <6267599d-bc0c-6d63-bb19-1fc695e53997@druid.net> <27a8f88b-1d78-e9df-9c5d-f9fa66c09769@druid.net> In-Reply-To: <27a8f88b-1d78-e9df-9c5d-f9fa66c09769@druid.net> From: Jason Tubnor Date: Sat, 24 Oct 2020 10:41:21 +1100 Message-ID: Subject: Re: When is a switch not a switch? To: "D'Arcy Cain" Cc: "Patrick M. Hausen" , "freebsd-virtualization@freebsd.org" X-Rspamd-Queue-Id: 4CJ1330NLWz3TkP X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of jtubnor@gmail.com designates 209.85.128.50 as permitted sender) smtp.mailfrom=jtubnor@gmail.com X-Spamd-Result: default: False [-2.01 / 15.00]; MIME_TRACE(0.00)[0:+,1:+,2:~]; TO_DN_EQ_ADDR_SOME(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; TO_DN_SOME(0.00)[]; R_SPF_ALLOW(-0.20)[+ip4:209.85.128.0/17]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-virtualization@freebsd.org]; ARC_NA(0.00)[]; DMARC_NA(0.00)[tubnor.net]; NEURAL_HAM_LONG(-0.97)[-0.968]; TO_MATCH_ENVRCPT_SOME(0.00)[]; NEURAL_HAM_SHORT(-1.07)[-1.068]; RCVD_IN_DNSWL_NONE(0.00)[209.85.128.50:from]; NEURAL_HAM_MEDIUM(-0.98)[-0.978]; FORGED_SENDER(0.30)[jason@tubnor.net,jtubnor@gmail.com]; RWL_MAILSPIKE_POSSIBLE(0.00)[209.85.128.50:from]; SUBJECT_ENDS_QUESTION(1.00)[]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:209.85.128.0/17, country:US]; R_DKIM_NA(0.00)[]; FROM_NEQ_ENVFROM(0.00)[jason@tubnor.net,jtubnor@gmail.com]; MAILMAN_DEST(0.00)[freebsd-virtualization] Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.33 X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 23 Oct 2020 23:41:36 -0000 On Fri, 23 Oct 2020 at 23:46, D'Arcy Cain wrote: > > > Actually, I can make a TCP connection from the VM to the host. Do I have > to > set up some sort of proxy arp? How would I do that? > > > In 12.1/2, we experienced issues similar, turning off LRO (-lro) on the physical interface fixed this for us. LRO causes packet fragmentation and I am sure you'd get ICMP to fail if you increased the payload. Cheers, Jason.