Date: Sun, 30 Jul 2023 16:17:43 +0100 From: Graham Perrin <grahamperrin@freebsd.org> To: FreeBSD CURRENT <freebsd-current@freebsd.org> Subject: Unreliability with DHCP Message-ID: <62d300c8-2c3e-58fa-334e-23a17962279a@freebsd.org>
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From: Graham Perrin <grahamperrin@freebsd.org>
To: FreeBSD CURRENT <freebsd-current@freebsd.org>
Message-ID: <62d300c8-2c3e-58fa-334e-23a17962279a@freebsd.org>
Subject: Unreliability with DHCP
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<html data-lt-installed=3D"true">
<head>
<meta http-equiv=3D"content-type" content=3D"text/html; charset=3DUTF=
-8">
</head>
<body style=3D"padding-bottom: 1px;">
<p><span style=3D"font-family:monospace"><span
style=3D"color:#000000;background-color:#ffffff;">1. Sleep
(suspend) whilst connected to one network</span></span></p>
<p><span style=3D"font-family:monospace"><span
style=3D"color:#000000;background-color:#ffffff;">2. connect to=
a network elsewhere</span></span></p>
<p><span style=3D"font-family:monospace"><span
style=3D"color:#000000;background-color:#ffffff;">3. wake
(resume).</span></span></p>
<p><span style=3D"font-family:monospace"><span
style=3D"color:#000000;background-color:#ffffff;">Result: <br>
</span></span></p>
<p><span style=3D"font-family:monospace"><span
style=3D"color:#000000;background-color:#ffffff;">/etc/resolv.c=
onf
frequently contains outdated information. In some (maybe all)
such cases, the IPv4 </span></span><span
style=3D"font-family:monospace"><span
style=3D"color:#000000;background-color:#ffffff;"><span
style=3D"font-family:monospace"><span
style=3D"color:#000000;background-color:#ffffff;">inet
address is outdated; and so on. <br>
</span></span></span></span></p>
<p><span style=3D"font-family:monospace"><span
style=3D"color:#000000;background-color:#ffffff;"><span
style=3D"font-family:monospace">Which </span></span></span><s=
pan
style=3D"font-family:monospace"><span
style=3D"color:#000000;background-color:#ffffff;">/etc/rc.d/
file(s) should I attempt to fix?</span></span></p>
<p><span style=3D"font-family:monospace"><span
style=3D"color:#000000;background-color:#ffffff;">I imagine
using the resume keyword, which is currently used by only one
script: <br>
</span></span></p>
<p><span style=3D"font-family:monospace"><span
style=3D"color:#000000;background-color:#ffffff;">% rcorder -k
resume /etc/rc.d/*
</span><br>
/etc/rc.d/ntpd
<br>
% <br>
</span><span style=3D"font-family:monospace"><span
style=3D"color:#000000;background-color:#ffffff;"></span></span=
></p>
<p><span style=3D"font-family:monospace"><br>
</span></p>
<p><span style=3D"font-family:monospace">I routinely run the command
below to work around the bug (and observe the states of things)
=E2=80=93 run _after_ the bug bites. I'd prefer a fix, to prevent=
the
bites. <br>
</span></p>
<p><span style=3D"font-family:monospace"><span
style=3D"color:#000000;background-color:#ffffff;">ls
/var/run/resolvconf/interfaces/ ; route delete default ;
ifconfig wlan0 down && ifconfig em0 down &&
sleep 5 ; ls /var/run/resolvconf/interfaces/ ; ifconfig em0 up
&& sleep 15</span><br>
; ls /var/run/resolvconf/interfaces/ ; cat /etc/resolv.conf ;
ping -c 2 -4 freshports.org<br>
</span><span style=3D"font-family:monospace"></span><span
style=3D"font-family:monospace"></span></p>
</body>
<lt-container></lt-container>
</html>
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