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Thu, 14 Mar 2024 07:12:22 +0000 Date: Thu, 14 Mar 2024 07:12:20 +0000 (UTC) From: Sreenath Battalahalli To: freebsd-net@FreeBSD.org Message-ID: <962395829.4561667.1710400340452@mail.yahoo.com> Subject: Sporadic DNS failure List-Id: Networking and TCP/IP with FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-net List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-net@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit References: <962395829.4561667.1710400340452.ref@mail.yahoo.com> X-Mailer: WebService/1.1.22129 YMailNodin X-Spamd-Bar: --- X-Spamd-Result: default: False [-4.00 / 15.00]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-0.996]; DMARC_POLICY_ALLOW(-0.50)[rocketmail.com,reject]; R_DKIM_ALLOW(-0.20)[rocketmail.com:s=s2048]; R_SPF_ALLOW(-0.20)[+ptr:yahoo.com]; MIME_GOOD(-0.10)[text/plain]; ASN(0.00)[asn:36646, ipnet:66.163.184.0/21, country:US]; RCVD_IN_DNSWL_NONE(0.00)[66.163.187.31:from]; FREEMAIL_FROM(0.00)[rocketmail.com]; RCPT_COUNT_ONE(0.00)[1]; RCVD_COUNT_ONE(0.00)[1]; FREEMAIL_ENVFROM(0.00)[rocketmail.com]; MIME_TRACE(0.00)[0:+]; ARC_NA(0.00)[]; MLMMJ_DEST(0.00)[freebsd-net@FreeBSD.org]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; RWL_MAILSPIKE_POSSIBLE(0.00)[66.163.187.31:from]; TO_DN_NONE(0.00)[]; RCVD_TLS_LAST(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DKIM_TRACE(0.00)[rocketmail.com:+] X-Rspamd-Queue-Id: 4TwJVJ5x3Dz4vTD Hi, I have been using freebsd as my primary OS on my ACER laptop for many years now. My laptop has 802.11AC card for which there is no kernel driver available. I am I use a USB wifi adapter to access the wifi router. I am having sporadic DNS failures . After reboot, everything works fine but after some time (30 minutes to a couple of hours), Internet connections start to fail. When this happens, I am able to ping 1.1.1.1, my DNS server. However, # drill yahoo.com (or any other name) fails with following error: Error: error sending query: Could not send or receive, because of network error Other devices connected to same Wifi router continue to work fine. I ran drill under truss and it appears after sendto to 1.1.1.1, no response comes. After this error occurs, it stays like that for many some time (20-30 minutes) and sometimes it gets resolved by itself. #uname -a FreeBSD bsd12 13.0-RELEASE-p13 FreeBSD 13.0-RELEASE-p13 #0: Mon Aug 29 19:52:47 UTC 2022 root@amd64-builder.d aemonology.net:/usr/obj/usr/src/amd64.amd64/sys /GENERIC amd64 Can someone please help me debug this problem? Thanks, Sreenath