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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 E8628CEBF97 for ; Tue, 18 Nov 2025 06:09:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=SW5mao1oAS7ZPY74h8nKRtOXO2UiK6ZWi1GkM3JuTbw=; b=OXBUdsIAEMKDcewiu1BLg9sETw 6VfL2k4LW3ZB601t2v/45HLY3wi+YkEUXDU32AzHeojJ5xUxrmfMJZH0ejPxi54/xHsE6aKJjt/yF wSEvw3b0cMxnX7VW4T2t4Whe1yJh/IdKcc9pXMNkS5rBDR4dslSj2fnE8K5OMm8wjVBZAGc5rc//+ b3XFao08BHpsZAzj46Hs/VbOhTV/g82teXwrrJ0xLFUPJnQ/bnYy6NV0inVqAk51+ULCajt7+3ueC 6nZzDfti4tI4Ooc0iEwHDVq/CuWOLIzPIfsCJsDDYIyhO9OHe2U0GG91IYmeXMGIqGwl7H7e4zoZ8 kMjSILxQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vLEuK-0000000HTJS-2Cwf; Tue, 18 Nov 2025 06:09:40 +0000 Received: from out-186.mta0.migadu.com ([2001:41d0:1004:224b::ba]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vLEuH-0000000HTHc-23k3 for linux-um@lists.infradead.org; Tue, 18 Nov 2025 06:09:39 +0000 X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1763446161; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=SW5mao1oAS7ZPY74h8nKRtOXO2UiK6ZWi1GkM3JuTbw=; b=pr0b6BONl9J93DUlw7yB7zfaY09DhaSjRb+dBBSJFGUyX9/gRWNCNeMlhtq5Ss5cHPMELc 1wEPqMeW2L8kV/nRr3wgFglki12JTnRQKJASIy44BS1d0CqNZGNOfasqWBrkeUxHUnzt6j 6w+QSE5TJVrVMJniYxiPsDkw5753Ekc= From: Tiwei Bie To: development@efficientek.com Cc: linux-um@lists.infradead.org, tiwei.bie@linux.dev Subject: Re: No more non-root networking modes? Date: Tue, 18 Nov 2025 14:08:55 +0800 Message-Id: <20251118060855.3714863-1-tiwei.bie@linux.dev> In-Reply-To: <20251117203131.479a1cfd@crass-HP-ZBook-15-G2> References: <20251117203131.479a1cfd@crass-HP-ZBook-15-G2> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251117_220937_669093_EF1E4EBB X-CRM114-Status: UNSURE ( 8.89 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-um@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-um" Errors-To: linux-um-bounces+linux-um=archiver.kernel.org@lists.infradead.org On Mon, 17 Nov 2025 20:31:31 -0600, Glenn Washburn wrote: > Hi all, > > I'm just now noticing that earlier this year obsolete networking > transports were removed (commit 65eaac591b75). This included SLiRP, > which was to my knowledge the only transport that supported network > access as an unprivileged user (no privileged access needed to setup > the transport either). Am I wrong about that? If not, I'm curious as to > why functionality that could not be achieved by other means was > dropped? And if there are any work arounds? I can understand why other > transports that need privileged access to setup, but were inferior to > other existing transports would be removed. I write this as someone who > is currently using the SLiRP transport. vec also supports networking without privileged access: https://www.kernel.org/doc/html/v6.17/virt/uml/user_mode_linux_howto_v2.html#vde-vector-transport https://lore.kernel.org/all/bfa07f4d-16a3-476b-9314-b8052ec198b1@antgroup.com/ Regards, Tiwei