Date: Thu, 14 Mar 2024 12:18:34 -0700 From: Chris <bsd-lists@bsdforge.com> To: Sreenath Battalahalli <sreenathbh@rocketmail.com> Cc: freebsd-net@freebsd.org Subject: Re: Sporadic DNS failure Message-ID: <c75fcf0dcd38d32dfd05a2b4f9b73e64@bsdforge.com> In-Reply-To: <962395829.4561667.1710400340452@mail.yahoo.com> References: <962395829.4561667.1710400340452.ref@mail.yahoo.com> <962395829.4561667.1710400340452@mail.yahoo.com>
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On 2024-03-14 00:12, Sreenath Battalahalli wrote: > 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? I'm going to suggest that this might be a symptom of your usb port/hub hanging-up/ disconnecting due to inactivity. Your BIOS setup may have a setting associated with that. OTOH I don't know what NIC driver you're using for your USB network adapter. When you discover you can't perform DNS lookups, are you still associated? eg; does the output of ifconfig still show associated? What are the settings in rc.conf(5) related to your network setup? > > Thanks, > Sreenath HTH --Chris
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