From owner-freebsd-questions@freebsd.org Tue Mar 20 23:29:40 2018 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 709B0F55618 for ; Tue, 20 Mar 2018 23:29:40 +0000 (UTC) (envelope-from alexmiroslav@gmail.com) Received: from mail-wr0-x233.google.com (mail-wr0-x233.google.com [IPv6:2a00:1450:400c:c0c::233]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id F05A16FE95 for ; Tue, 20 Mar 2018 23:29:39 +0000 (UTC) (envelope-from alexmiroslav@gmail.com) Received: by mail-wr0-x233.google.com with SMTP id f14so3421473wre.8 for ; Tue, 20 Mar 2018 16:29:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=co3IsIJ6ifdkzDkag8TPtgo4/10ScKlWxvEfUS8aF7Y=; b=SGCm3ihui7zJdfoqwBWfjw8ptnD7l71dtSNMz5s0ynQfbn6aPxTouFC+6+BuxRdkUi Mm5a8Rzpyk4I+MT0oJbhM1s2eOP7Af+UtC+mWcpWv8rfK3ZZnDPSP63cb0XYsr2duNpi V9IzSUVPEI+wrUB8VlqGAXdvZXipbIKYSiSXrwrkmJTAOOP4Zlw0BVRwug3Zyx5mvk6S tY6UqnRcBoByjpaLM4aGfbe5Q381qNhZwNBKuyDWHqk4hbRh0umdNKwkFRleAELyLIkd 3nDhqjI+kQnSmlbTPUOZwdrnb9kSyIqg7ALGP4rRgazL9pXphblMhJE+XDx+BUoZ0ymQ KJ/A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to; bh=co3IsIJ6ifdkzDkag8TPtgo4/10ScKlWxvEfUS8aF7Y=; b=ZDorJr32RDGt0NKKp17nbq0DMDCpkSW6InhGBvmCWxnYI2QRQfuiiwP+1/S6ixvgfz zsjfolVFVdBWCv15JWxvqZFy9Yqu7bidR7Q7lgwmmSldIjSbqQF64wSD5B2dBpMzodZg 84E+MIgYD2GISRCJgb/pSaSpoEHgiHZNuVQPuvkWbBbnu+XQt0PxrdgDV5v5SLbVZzrY tjSLHl93WD+nsCWp5qsMPfxuxi44gqXHqQI4Fa4cGhW/kqO/+mPDMMQ7wbK/n/VOQFIL yyVWXgWN2ZCkz+KYR8OK6D3TwcPUFe7RFERH/vppfa/Kj6h2FmuQFSDcFtk3QoIByrr2 gsFQ== X-Gm-Message-State: AElRT7FwJv+uGNwq+GXsdFT3+QHpvxnfe2hKZuwGeVjDiXv/ISZAQqJQ eTBwsvzGpnHRbY2m8or7B5xtFaQFnnkIIyt820U= X-Google-Smtp-Source: AG47ELsM03mR9xx2qDvrpkjHljaStqYHMj5tonoapkWLgfs08JpPYt+0fcv2b5dGNQHjkQTlurX1ZZmckLv0GxiJrdE= X-Received: by 10.223.225.71 with SMTP id f7mr1243962wri.172.1521588578596; Tue, 20 Mar 2018 16:29:38 -0700 (PDT) MIME-Version: 1.0 Received: by 10.223.138.142 with HTTP; Tue, 20 Mar 2018 16:29:38 -0700 (PDT) In-Reply-To: References: From: Aleksandr Miroslav Date: Tue, 20 Mar 2018 16:29:38 -0700 Message-ID: Subject: Re: weird network/DNS issues (nsd not returning answer) To: freebsd-questions@freebsd.org Content-Type: text/plain; charset="UTF-8" X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 20 Mar 2018 23:29:40 -0000 On Tue, Mar 20, 2018 at 4:11 PM, Aleksandr Miroslav wrote: > All my other servers can query k and z just fine. Only b is exhibiting > this problem. To be sure it wasn't an issue specific to nsd, I turned off nsd on k, and started unbound. Other servers were able to make queries to k just fine, but similar to nsd, queries from b came to the server and seemed to be returned, but the return reply never got to b. I did the same thing with a simple DNS server I found in ports, sheerdns, same issue. Other servers were able to make queries to port 53 on k, but from b, the replies never reach the server.