Date: Fri, 15 Mar 2024 04:13:10 +0000 (UTC) From: Sreenath Battalahalli <sreenathbh@rocketmail.com> To: Chris <bsd-lists@bsdforge.com> Cc: freebsd-net@freebsd.org Subject: Re: Sporadic DNS failure Message-ID: <1813027035.5041661.1710475990554@mail.yahoo.com> In-Reply-To: <c75fcf0dcd38d32dfd05a2b4f9b73e64@bsdforge.com> References: <962395829.4561667.1710400340452.ref@mail.yahoo.com> <962395829.4561667.1710400340452@mail.yahoo.com> <c75fcf0dcd38d32dfd05a2b4f9b73e64@bsdforge.com>
next in thread | previous in thread | raw e-mail | index | archive | help
------=_Part_5041660_1565120402.1710475990553
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: quoted-printable
=20
Hi Chris,
Thanks for your message.
The wifi continues to be associated with access point, and I can ping 1.1.1=
.1 as well.
My USB wifi interface is rtwn(earlier urtwn)
It is just that DNS queries fail, even when 1.1.1.1 is accessible, at least=
to ping.
Is it possible that UDP communication is failing?=20
Is there any log information that can shed more light on the issue?
thanks,
Sreenath
On Friday, March 15, 2024 at 12:48:47 AM GMT+5:30, Chris <bsd-lists@bs=
dforge.com> wrote: =20
=20
On 2024-03-14 00:12, Sreenath Battalahalli wrote:
> Hi,
>=20
> I have been using freebsd as my primary OS on my ACER laptop for many yea=
rs=20
> now.
> My laptop has 802.11AC card for which there is no kernel driver available=
. I=20
> am I
> use a USB wifi adapter to access the wifi router.
>=20
> I am having sporadic DNS failures .
>=20
> After reboot, everything works fine but after some time (30 minutes to a=
=20
> couple of
> hours), Internet
> connections start to fail.
>=20
> When this happens, I am able to ping 1.1.1.1, my DNS server.
>=20
> However,
> # drill yahoo.com (or any other name) fails with following error:
>=20
> Error: error sending query: Could not send or receive, because of network=
=20
> error
>=20
> Other devices connected to same Wifi router continue to work fine.
>=20
> I ran drill under truss and it appears after sendto to 1.1.1.1, no respon=
se=20
> comes.
>=20
> After this error occurs, it stays like that for many some time (20-30=20
> minutes) and
> sometimes it gets resolved by itself.
>=20
>=20
> #uname -a
> FreeBSD bsd12 13.0-RELEASE-p13 FreeBSD 13.0-RELEASE-p13 #0: Mon Aug 29=20
> 19:52:47
> UTC 2022=C2=A0 =C2=A0 root@amd64-builder.d
> aemonology.net:/usr/obj/usr/src/amd64.amd64/sys
> /GENERIC=C2=A0 amd64
>=20
> Can someone please help me debug this problem?
I'm going to suggest that this might be a symptom of your usb port/hub=20
hanging-up/
disconnecting due to inactivity. Your BIOS setup may have a setting=20
associated
with that. OTOH I don't know what NIC driver you're using for your USB=20
network
adapter. When you discover you can't perform DNS lookups, are you still=20
associated?
eg; does the output of ifconfig still show associated? What are the setting=
s
in rc.conf(5) related to your network setup?
>=20
> Thanks,
> Sreenath
HTH
--Chris
=20
------=_Part_5041660_1565120402.1710475990553
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable
<div> <br>Hi Chris,<br><br>Thanks for your message.<br>The w=
ifi continues to be associated with access point, and I can ping 1.1.1.1 as=
well.<br>My USB wifi interface is rtwn(earlier urtwn)<br><br>It is just th=
at DNS queries fail, even when 1.1.1.1 is accessible, at least to ping.<br>=
<br>Is it possible that UDP communication is failing? <br>Is there any log =
information that can shed more light on the issue?<br><br>thanks,<br>Sreena=
th<br><br> </div> <div class=3D"yahoo_quoted" style=
=3D"margin:10px 0px 0px 0.8ex;border-left:1px solid #ccc;padding-left:1ex;"=
> <div style=3D"font-family:'Helvetica Neue', Helvet=
ica, Arial, sans-serif;font-size:13px;color:#26282a;"> =
<div> On Friday, March 15, 2024 at 12:48:47 A=
M GMT+5:30, Chris <bsd-lists@bsdforge.com> wrote: </di=
v> <div><br></div> <div><br></div> =
<div><div dir=3D"ltr">On 2024-03-14 00:12, Sreenath Battalahalli wrote=
:<br clear=3D"none">> Hi,<br clear=3D"none">> <br clear=3D"none">>=
I have been using freebsd as my primary OS on my ACER laptop for many year=
s <br clear=3D"none">> now.<br clear=3D"none">> My laptop has 802.11A=
C card for which there is no kernel driver available. I <br clear=3D"none">=
> am I<br clear=3D"none">> use a USB wifi adapter to access the wifi =
router.<br clear=3D"none">> <br clear=3D"none">> I am having sporadic=
DNS failures .<br clear=3D"none">> <br clear=3D"none">> After reboot=
, everything works fine but after some time (30 minutes to a <br clear=3D"n=
one">> couple of<br clear=3D"none">> hours), Internet<br clear=3D"non=
e">> connections start to fail.<br clear=3D"none">> <br clear=3D"none=
">> When this happens, I am able to ping 1.1.1.1, my DNS server.<br clea=
r=3D"none">> <br clear=3D"none">> However,<br clear=3D"none">> # d=
rill yahoo.com (or any other name) fails with following error:<br clear=3D"=
none">> <br clear=3D"none">> Error: error sending query: Could not se=
nd or receive, because of network <br clear=3D"none">> error<br clear=3D=
"none">> <br clear=3D"none">> Other devices connected to same Wifi ro=
uter continue to work fine.<br clear=3D"none">> <br clear=3D"none">> =
I ran drill under truss and it appears after sendto to 1.1.1.1, no response=
<br clear=3D"none">> comes.<br clear=3D"none">> <br clear=3D"none">&=
gt; After this error occurs, it stays like that for many some time (20-30 <=
br clear=3D"none">> minutes) and<br clear=3D"none">> sometimes it get=
s resolved by itself.<br clear=3D"none">> <br clear=3D"none">> <br cl=
ear=3D"none">> #uname -a<br clear=3D"none">> FreeBSD bsd12 13.0-RELEA=
SE-p13 FreeBSD 13.0-RELEASE-p13 #0: Mon Aug 29 <br clear=3D"none">> 19:5=
2:47<br clear=3D"none">> UTC 2022 <a shape=3D"rect" ymailt=
o=3D"mailto:root@amd64-builder.d" href=3D"mailto:root@amd64-builder.d">root=
@amd64-builder.d</a><br clear=3D"none">> aemonology.net:/usr/obj/usr/src=
/amd64.amd64/sys<br clear=3D"none">> /GENERIC amd64<br clear=3D"no=
ne">> <br clear=3D"none">> Can someone please help me debug this prob=
lem?<br clear=3D"none">I'm going to suggest that this might be a symptom of=
your usb port/hub <br clear=3D"none">hanging-up/<br clear=3D"none">disconn=
ecting due to inactivity. Your BIOS setup may have a setting <br clear=3D"n=
one">associated<br clear=3D"none">with that. OTOH I don't know what NIC dri=
ver you're using for your USB <br clear=3D"none">network<br clear=3D"none">=
adapter. When you discover you can't perform DNS lookups, are you still <br=
clear=3D"none">associated?<br clear=3D"none">eg; does the output of ifconf=
ig still show associated? What are the settings<br clear=3D"none">in rc.con=
f(5) related to your network setup?<div class=3D"yqt9000462212" id=3D"yqtfd=
31433"><br clear=3D"none">> <br clear=3D"none">> Thanks,<br clear=3D"=
none">> Sreenath</div><br clear=3D"none"><br clear=3D"none">HTH<br clear=
=3D"none"><br clear=3D"none">--Chris<div class=3D"yqt9000462212" id=3D"yqtf=
d32636"><br clear=3D"none"></div></div></div> </div> =
</div>
------=_Part_5041660_1565120402.1710475990553--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?1813027035.5041661.1710475990554>