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[108.206.116.173]) by smtp.gmail.com with ESMTPSA id y10sm5367431pfl.21.2021.11.25.23.33.20 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 25 Nov 2021 23:33:21 -0800 (PST) From: Andrii Petrenko Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (Mac OS X Mail 15.0 \(3693.20.0.1.32\)) Subject: Wireguard DNS error. Message-Id: Date: Thu, 25 Nov 2021 23:33:18 -0800 To: wireguard@lists.zx2c4.com X-Mailer: Apple Mail (2.3693.20.0.1.32) X-BeenThere: wireguard@lists.zx2c4.com X-Mailman-Version: 2.1.30rc1 Precedence: list List-Id: Development discussion of WireGuard List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: wireguard-bounces@lists.zx2c4.com Sender: "WireGuard" Hello, I have a problem with Wireguard DNS proxy. Issue looks like:=20 Trough DNS proxy $ host presence.teams.microsoft.com. = = =20 Host presence.teams.microsoft.com not found: 2(SERVFAIL) Trough the upstream DNS server: $ host presence.teams.microsoft.com. 10.10.10.1=20 Using domain server: Name: 10.10.10.1 Address: 10.10.10.1#53 Aliases: presence.teams.microsoft.com is an alias for = presence.services.sfb.trafficmanager.net. presence.services.sfb.trafficmanager.net is an alias for = a-ups-presence0-prod-azsc.eastus2.cloudapp.azure.com. a-ups-presence0-prod-azsc.eastus2.cloudapp.azure.com has address = 52.114.142.202 Logs from server:=20 time=3D"2021-11-26T02:33:56Z" level=3Ddebug msg=3D"dns query: dns query = for: presence.teams.microsoft.com.:1:1" file=3D"server.go:70" time=3D"2021-11-26T02:33:56Z" level=3Derror msg=3D"failed lookup record = with error: dns: overflowing header size\n;; opcode: QUERY, status: = NOERROR, id: 53952\n;; flags: rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, = ADDITIONAL: 0\n\n;; QUESTION = SECTION:\n;presence.teams.microsoft.com.\tIN\t A\n" file=3D"server.go:76" Another error: $ host ocsp2.apple.com Host ocsp2.apple.com not found: 2(SERVFAIL) $ host ocsp2.apple.com 10.10.10.1 Using domain server: Name: 10.10.10.1 Address: 10.10.10.1#53 Aliases: ocsp2.apple.com is an alias for ocsp2-lb.apple.com.akadns.net. ocsp2-lb.apple.com.akadns.net is an alias for ocsp2.g.aaplimg.com. ocsp2.g.aaplimg.com has address 17.253.5.203 ocsp2.g.aaplimg.com has address 17.253.1.201 ocsp2.g.aaplimg.com has IPv6 address 2620:149:a00:f000::5 ocsp2.g.aaplimg.com has IPv6 address 2620:149:a1c:f000::1 time=3D"2021-11-26T02:32:17Z" level=3Ddebug msg=3D"dns query: dns query = for: ocsp2.apple.com.:1:1" file=3D"server.go:70" time=3D"2021-11-26T02:32:17Z" level=3Derror msg=3D"failed lookup record = with error: dns: overflow unpacking uint32\n;; opcode: QUERY, status: = NOERROR, id: 18718\n;; flags: rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, = ADDITIONAL: 0\n\n;; QUESTION SECTION:\n;ocsp2.apple.com.\tIN\t A\n" = file=3D"server.go:76=E2=80=9D How to fix this problem? Please advise. Thank you, --- Andrii Petrenko aplsms@gmail.com=09