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[77.37.180.76]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-57d5d872509sm34356e87.47.2025.09.20.06.56.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 20 Sep 2025 06:56:25 -0700 (PDT) Date: Sat, 20 Sep 2025 16:56:21 +0300 From: Vadim Goncharov To: "Bjoern A. Zeeb" Cc: Andriy Gapon , "net@FreeBSD.org" Subject: Re: DHCP on multi-homed host, some thoughts Message-ID: <20250920165621.25009928@nuclight.lan> In-Reply-To: References: <6abe9da1-9818-438b-ad8f-5424e50a39ce@FreeBSD.org> X-Mailer: Claws Mail 3.21.0 (GTK+ 2.24.33; amd64-portbld-freebsd13.4) List-Id: Networking and TCP/IP with FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-net List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-net@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Spamd-Bar: ---- X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US] X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Rspamd-Queue-Id: 4cTWBY2gNcz3TRh On Sat, 20 Sep 2025 07:06:56 +0000 (UTC) "Bjoern A. Zeeb" wrote: > But chosing an upstream DNS with the wrong source address often won't > work. At least here ISPs won't allow you to use their resolver if you > are not coming from their IP range. > The answer then really is to run a local resolver independent on > upstream for as long as that is feasible and working (*). [...] > (*) and before anyone suggests any of the open resolvers which collect > your data, please leave this thread alone. This way, while works, is not very good for Internet as a whole, and top-level DNS servers in particular, due to increased number of requests because of caches in the network are not utilized; and increased latency for user. And who will pay for this? Not that I'm advocating for N.N.N.N collectors but they, like ISP resolvers, don't have this problem. -- WBR, @nuclight