X-Recipient: archive-cygwin AT delorie DOT com DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 1B84A38555A3 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cygwin.com; s=default; t=1690559949; bh=D8vrFbrPfSJEGBz3+YhE0bdCnzCEqxd8meBXwnCPXfw=; h=To:Subject:Date:List-Id:List-Unsubscribe:List-Archive:List-Post: List-Help:List-Subscribe:From:Reply-To:From; b=Q7GUVlZwbd5EQ98ouYHQoYG8D4i52hSiUSlni2LUoHyVgb945GRazS+vpomC2NNHo WkeX6nXVReGh26Ma4dJopC8wa/gq11tJ3hQwXialeAeMCRdfE6Z6dm6btj6tsCLsPJ sm+qmSR1uG6+a3kGM4Pm68PbfXzH4ifS1HNN0gPc= X-Original-To: cygwin AT cygwin DOT com Delivered-To: cygwin AT cygwin DOT com DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 042573856092 X-Injected-Via-Gmane: http://gmane.org/ To: cygwin AT cygwin DOT com Subject: dig and host don't work in IPv6 Date: Fri, 28 Jul 2023 11:58:15 -0400 Message-ID: <6hi7cilufpjnc4u968imrl826rk0n88hsc@4ax.com> Mime-Version: 1.0 X-Newsreader: Forte Agent 4.2/32.1118 X-Archive: encrypt X-Spam-Status: No, score=-3031.9 required=5.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS, KAM_DMARC_STATUS, KAM_NUMSUBJECT, SPF_HELO_NONE, SPF_PASS, TXREP, T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: cygwin AT cygwin DOT com X-Mailman-Version: 2.1.29 List-Id: General Cygwin discussions and problem reports List-Archive: List-Post: List-Help: List-Subscribe: , From: Andrew Schulman via Cygwin Reply-To: Andrew Schulman Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Cygwin" Our agency has started using IPv6. My PC has IPv4 and IPv6 addresses. DNS servers are all IPv6 addresses. All of this works great, except that now the host and dig commands no longer work, even with -6: $ dig -6 cygwin.com ; <<>> DiG 9.11.9 <<>> -6 cygwin.com ;; global options: +cmd ;; connection timed out; no servers could be reached It does work if I specify the DNS server in the command: $ dig @2620:117:5010:1a1::f005 cygwin.com ; <<>> DiG 9.11.9 <<>> @2620:117:5010:1a1::f005 cygwin.com ; (1 server found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 56580 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 1220 ; COOKIE: d078f7e381ceee2117dbf35864c3e4d5b7b37dc8c646f48c (good) ;; QUESTION SECTION: ;cygwin.com. IN A ;; ANSWER SECTION: cygwin.com. 3600 IN A 8.43.85.97 ;; Query time: 142 msec ;; SERVER: 2620:117:5010:1a1::f005#53(2620:117:5010:1a1::f005) ;; WHEN: Fri Jul 28 11:55:01 EDT 2023 ;; MSG SIZE rcvd: 83 It also works if I manually add a 'nameserver' line to /etc/resolv.conf. That's not a sustainable solution though, since the nameservers change and I drop into and out of the IPv6 VPN. Should I be doing something differently? Or is it a bug? Thanks, Andrew -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple