From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B1269EB64D7 for ; Mon, 26 Jun 2023 09:50:35 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qDird-0002MS-6u; Mon, 26 Jun 2023 05:50:29 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qDirc-0002MK-79 for qemu-devel@nongnu.org; Mon, 26 Jun 2023 05:50:28 -0400 Received: from mout.web.de ([212.227.15.3]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qDira-0005rW-A1 for qemu-devel@nongnu.org; Mon, 26 Jun 2023 05:50:27 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=web.de; s=s29768273; t=1687773021; x=1688377821; i=lukasstraub2@web.de; bh=2gyt0efEMGmdq8I9e6Chc7TncPc3Whgpg9hQvMcLEyY=; h=X-UI-Sender-Class:Date:From:To:Cc:Subject:In-Reply-To:References; b=BLJAN42WSxisNpZnXAWjL1bjlp4ezf9xBq/J9awtxdrzGfrFN3SDt+S5lWWUDLhCp5OyegR Mz1uYHbXsbkUYOoKhuaFIHEq/ratoqwTS7wFXi5ow5mDV719RRAa1i9cg9eBzb+3180ntpCUy u7odlmTEYwnW4HfkOpFWxD/wjCoD/UxI7eIFwjT80sb+urMc8kDWwcIqHcOFwwZCaLB1M3WaJ MP6UYnUwq7JtGG0K1fEJMnRyvBgWoNz9Sm0Y7ppxE3ABfucExSz2enrUC7RvhNegd30XHU51r 305nES79z4JSgyMPOID2mh5kh9zYqA/9es1R9mGHAtsN9YKe9R1A== X-UI-Sender-Class: 814a7b36-bfc1-4dae-8640-3722d8ec6cd6 Received: from mobian.usb.local ([82.207.254.108]) by smtp.web.de (mrweb005 [213.165.67.108]) with ESMTPSA (Nemesis) id 1MKdHE-1qU8iP0DTI-00KwwI; Mon, 26 Jun 2023 11:50:21 +0200 Date: Mon, 26 Jun 2023 11:49:16 +0200 From: Lukas Straub To: Felix Wu Cc: qemu-devel@nongnu.org, Samuel Thibault , Jason Wang Subject: Re: Tips for local testing guestfwd Message-ID: <20230626114916.45355529@mobian.usb.local> In-Reply-To: References: MIME-Version: 1.0 Content-Type: multipart/signed; boundary="Sig_/jBGZHp2bkts57nSVLxug1TI"; protocol="application/pgp-signature"; micalg=pgp-sha512 X-Provags-ID: V03:K1:5ASuRfcF6Ttg1K4i8My1+8eJtk2EJeqU8gG40N77rep31DS6hn9 S2J7+01Mj13a6UrykJwbOmuUGp0BY/jVwGFPM5TRqwMHi4thiyrR8scl9RVHKgOU/Xo23TJ EfyjwIMYrx9ySBqnXTHR8YyFLGSpROHBIlBem0K4CVHrf50twUVJp9JHLzHa3Haij91aU5s FwXz00cNaWs8pRcPz7yXQ== UI-OutboundReport: notjunk:1;M01:P0:ucO08WH8Oo0=;v8c5UvBjDulVeCRXpY+66oztMmR sUJEqL1pv2CFck4iy7/5DNejo3gEndwxgfp6oxvBohl9FIvPeeAVIhRqgMSZvFazcMlYswYnZ C5+95IiHUFUxwlThR3xpxCvvunlawXBY0Ui4tYo2nI85rc1vfCVLEzg7yrhiGHBbKOoQcK0WB 1sPyeVoQS4C9DTk6ja28FVR5kPCcAulh1jYf12s1ComQfVkzA8AApvz6ch+pJosXutY+q2H1E sRvbqqU6Q0jftglnc2qaV32fbSuzDGqxi9mfnp1JrZANQ15YE6vSDmBV10oXHa8nhCAxldmI5 VyBZEXZ2rv7pn5lTURfbP3cO6OhU5Fvqz9fYSujhHwz+OyyOMVmIfZ2QUQ/tG3B+RDuCBQJpk ng9G/TYklAowvmG0/EqhLUB+V1ivA65oIF+SuSrG42fCixZTuQSFW/SYqdVArWG7tP4OAYWah 5wDK045+e9E7qiTvJa32N20rZ+5JdvhvNVodOXzrgDQspHGm/NUrbxmKaBeoxxyp3J4jqIcVR 4qYYs1b8somgTm0yAdu7PQ/0JDb+QE4ID59ktOwqwrFtdg6b/78bpaBtqTWxWBxu7d9Wdt+OH CMeGw/riPRDLwAAHcTDgyuOK7DWxuYWGksFxRknQc4AbS6skHKLUhD+3CRIuisPu3A6fjQPz7 M24VzFwJhnlGMcY+VWfv9fMV9itnDHmfeC7cVl+5Mj75wchNP2rKHbq1GAT5Q3/541XbAzPbY 8OBs8UMH0hUlTwbS0CcAyvy6QqUN+n+kYvkFHq4vyz2rQ9mC25HQz8vEBw0pgqSYeDVAw/sDX hHTrRA1tnr/4H3B3DrEfbHECdbKgCURiQWgIEVoKisA2evUMf41S4EA3rYjxNQ0+6SliH166k Dsmkt0kLgmPvywswPuax3qOCDDaJzSBHom6UecaYVRFA8OyCmXypEd0HQK3pNZ92sf4wA7Ofs OmdhjoS3LF7OXXMMU/gUfMmQ8Ew= Received-SPF: pass client-ip=212.227.15.3; envelope-from=lukasstraub2@web.de; helo=mout.web.de X-Spam_score_int: -25 X-Spam_score: -2.6 X-Spam_bar: -- X-Spam_report: (-2.6 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org --Sig_/jBGZHp2bkts57nSVLxug1TI Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable CC'ing SLIRP and net maintainer. On Sun, 25 Jun 2023 22:58:36 -0700 Felix Wu wrote: > Hi all, >=20 > TL,DR: I am working on QEMU ipv6 guestfwd feature and finished coding, and > would like to learn the best practice to test it. > Context: in slirp side this task is tracking by [1]. > Currently, I have done following: > i. made char parse + guestfwd functions happy with ipv6 address. > ii. enabled debug print and made sure the ip and port are inserted into t= he > forward list in libslirp. > To sufficiently verify it's working, I do have three questions: > 1. I want to forward a port in the guest (OS in QEMU) to a port 22 on the > host OS, and ssh from guest back to host, > does this sound reasonable? If this is not a good idea, what method is > recommended? > 2. I want to understand what ip I should use. Currently I have following > formats for the QEMU invocation in ipv6: > ``` > guestfwd=3Dtcp:[::1]:1234-tcp:[my:host:ip:from:ifconfig]:22 > ``` > I know the general form is `guestfwd=3Dtcp:server:port-dev`, where > server:port is for guest, dev is for host. > Adding [] in my implementation will let QEMU know it's ipv6. > Is the aforementioned invocation correct? Or in this case [::1] is the > local host address and I should put qemu address > for it instead? > 3. Is there a default ipv6 address for QEMU instance? I think I need it in > the invocation. >=20 > Thanks in advance! Felix >=20 > [1]. https://gitlab.freedesktop.org/slirp/libslirp/-/issues/67 --Sig_/jBGZHp2bkts57nSVLxug1TI Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEg/qxWKDZuPtyYo+kNasLKJxdslgFAmSZXx0ACgkQNasLKJxd slimBRAArqjJJvStbShnMg1LcdHBYutM6gfbjzMPPFR7NSJZ8slUjMwD/5pIU6ec pRzwKyTzEILGt7A3ad0aXc4NrCYZiz4/peruDcTB1V0PuDjxrXCFxIx2CNH1ipk0 9FPjq95xI+YiY85iVpPaBkQMUkhgbeuqsrCPfZk20OM6PoTLVwtzMwTOIck485hW UlYw7r+NlSpiplg+/Oz27eFOkUy6ce/8JG6+1mzzpYJlrJTcbBHMZpfzU9q8A1AZ 11XlNsr4vBKUz57lw4WsqJo5cBgvjpMUxRzpDl6zZIpMdkNlHovI76HFaVQkhYuR 4RjS/C3qOTNpkeWmDQKJyFxXXa/eZg3DfITTfQjrOheQbkcUegvVJwx4LejtxLTH B6RbZkUbDiz5BbOIQHyQonstoEbwFp24UYtR9t8JRAuf7PTmk/r5mKe4FTkRaTF0 6r6cpeiEbQVWEV0T9v0rSKb5HXOaRN/xmhKmIiZNGqr9q1i4gPBfnqJdSUs75ZJx VfI8A326vcXJbHnChgFbz03zs63q0WoiaUoGKX/csBqChndI59UUAteX9bWZfQff M+Zwpxh7B+qksTR04nsJKiCGzQWPGch2s4mhFy7NjjB6dBW4tM5z6UYjllH+hPK6 dBhBb5kvVdtUCM3Kg+COeva/Y1RfZ4j+7onmeFQA+KVvhLUECQA= =6URw -----END PGP SIGNATURE----- --Sig_/jBGZHp2bkts57nSVLxug1TI--