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Thu, 02 Apr 2026 04:17:31 -0700 (PDT) Received: from [192.168.88.32] ([212.105.153.248]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4887ad477f6sm64087705e9.7.2026.04.02.04.17.29 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 02 Apr 2026 04:17:31 -0700 (PDT) Message-ID: Date: Thu, 2 Apr 2026 13:17:29 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH net-next v7] selftests: net: add tests for PPP To: Qingfang Deng Cc: Jakub Kicinski , Dianne Skoll , Shuah Khan , "David S. Miller" , Eric Dumazet , Simon Horman , Felix Maurer , Sebastian Andrzej Siewior , "Matthieu Baerts (NGI0)" , linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-ppp@vger.kernel.org, netdev@vger.kernel.org, Paul Mackerras , Jaco Kroon References: <20260330035604.133073-1-dqfext@gmail.com> <20260401081030.29b050d5@kernel.org> <20260401175621.549c492e@kernel.org> <50ae3c69-2c4e-499f-a46a-cbd207ff5f09@redhat.com> Content-Language: en-US From: Paolo Abeni In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On 4/2/26 12:13 PM, Qingfang Deng wrote: > On Thu, Apr 2, 2026 at 5:48 PM Paolo Abeni wrote: >> Note that similar failures in the past in other test-cases were usually >> due to timing issues. i.e. the pppoe-server starts in background too >> late for the client. > > I don't think it is a timing issue, otherwise the PADI negotiation > won't succeed. The "updetach" option on the client side also make it > wait for the negotiation. > It's likely that the pppd instance spawned by pppoe-server fails to > find the "rp-pppoe.so" plugin, so the connection fails when handing > off the session from pppoe-server to pppd. Note the naming difference: > the client loads "pppoe.so", while the server loads "rp-pppoe.so" by > default. > > What distro do you run CI tests on? On Ubuntu 24.04, "rp-pppoe.so" is > a symlink to "pppoe.so" in apt package "ppp". Maybe an additional > package is required for the distro you use, or I may work around that > by manually creating the symlink. It's fedora 43 with ppp and pppoe installed. ppp provides pppoe.so, and AFAICS nothink provides rp-pppoe.so, and the pppoe-server is looking for a non existing /etc/ppp/plugins/rp-pppoe.so plugin. Before I mess with the nipa testbed, could you please double check that ln -n /usr/lib64/pppd/2.5.1/pppoe.so /etc/ppp/plugins/rp-pppoe.so should solve? Thanks, Paolo