dhclient doesn't renew IP address lease after system time changes
"Song, Kun" <[email protected]> Tue, 4 Jul 2023 05:24:25 +0000
| Newsgroups | gmane.network.dhcp.isc.dhcp-client |
|---|---|
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Hi,
For issue "dhclient doesn't renew IP address lease after system time change=
s"
dhcp version: 4.4.1
bind version: 9.11
Check relative issue:
https://bugzilla.redhat.com/show_bug.cgi?id=3D1729211
https://bugzilla.redhat.com/show_bug.cgi?id=3D1093803
https://bugzilla.redhat.com/show_bug.cgi?id=3D916116
Patches is dhcp-system_time_changed.patch for dhcp and bind-9.11-rh1732883.=
patch for bind.
https://git.centos.org/rpms/dhcp/blob/c7/f/SOURCES/dhcp-system_time_changed=
.patch
There was a discussion in history, redhat has a related fix,
https://lists.isc.org/mailman/htdig/dhcp-users/2014-September/018174.html
I backport patch,patch use monotonic time replace gettimeofday
but dhcpv6 still seems to lose the global address, and there is no merge pa=
tch upstream.
backward jump/forward jump
#date
Tue Jun 20 11:04:53 UTC 2023
#date -s "Tue Jun 20 08:04:53 UTC 2023"
Tue Jun 20 08:04:53 UTC 2023
~# ifconfig eth0
eth0 Link encap:Ethernet HWaddr 58:77:78:80:F0:55
inet6 addr: fdc0:2001:dd8:10::2/128 Scope:Global
inet6 addr: fe80::5100:7fff:fe8f:f055/64 Scope:Link
UP BROADCAST RUNNING MTU:2000 Metric:1
RX packets:231 errors:0 dropped:0 overruns:0 frame:0
TX packets:368 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:24290 (23.7 KiB) TX bytes:253899 (247.9 KiB)
ifconfig eth0
eth0 Link encap:Ethernet HWaddr 58:77:78:80:F0:55
inet6 addr: fe80::5100:7fff:fe8f:f055/64 Scope:Link
UP BROADCAST RUNNING MTU:2000 Metric:1
RX packets:298 errors:0 dropped:0 overruns:0 frame:0
TX packets:506 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:29286 (28.5 KiB) TX bytes:435628 (425.4 KiB)
Many thanks in advance,
BR/SK
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<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span lang=3D"EN-US">Hi,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p> </o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">For issue “dhclient doesn=
't renew IP address lease after system time changes”<o:p></o:p></span=
></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">dhcp version: 4.4.1<o:p></o:p><=
/span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">bind version: 9.11<o:p></o:p></=
span></p>
<p><span lang=3D"EN-US">Check relative issue:<br>
<a href=3D"https://bugzilla.redhat.com/show_bug.cgi?id=3D1729211" target=3D=
"_blank">https://bugzilla.redhat.com/show_bug.cgi?id=3D1729211</a><br>
<a href=3D"https://bugzilla.redhat.com/show_bug.cgi?id=3D1093803" target=3D=
"_blank">https://bugzilla.redhat.com/show_bug.cgi?id=3D1093803</a><br>
<a href=3D"https://bugzilla.redhat.com/show_bug.cgi?id=3D916116" target=3D"=
_blank">https://bugzilla.redhat.com/show_bug.cgi?id=3D916116</a><o:p></o:p>=
</span></p>
<p><span lang=3D"EN-US">Patches is dhcp-system_time_changed.patch for dhcp =
and bind-9.11-rh1732883.patch for bind.<br>
<a href=3D"https://git.centos.org/rpms/dhcp/blob/c7/f/SOURCES/dhcp-system_t=
ime_changed.patch" target=3D"_blank">https://git.centos.org/rpms/dhcp/blob/=
c7/f/SOURCES/dhcp-system_time_changed.patch</a><o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN" style=3D"font-size:12.0pt;font-family:SimSun">There was a discussio=
n in history, redhat has a related fix,
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><a href=3D"https://lists.isc.or=
g/mailman/htdig/dhcp-users/2014-September/018174.html">https://lists.isc.or=
g/mailman/htdig/dhcp-users/2014-September/018174.html</a><o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p> </o:p></span></p>
<pre><span lang=3D"EN">I backport patch,patch use monotonic time</span><spa=
n lang=3D"EN-US"> replace gettimeofday<o:p></o:p></span></pre>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN" style=3D"font-size:12.0pt;font-family:SimSun">but dhcpv6 still seem=
s to lose the global address, and there is no merge patch upstream.</span><=
span lang=3D"EN-US" style=3D"font-size:12.0pt;font-family:SimSun"><o:p></o:=
p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p> </o:p></span></p>
<pre><span lang=3D"EN-US">backward jump/forward jump<o:p></o:p></span></pre=
>
<pre><span lang=3D"EN-US">#date <o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">Tue Jun 20 11:04:53 UTC 2023<o:p></o:p></span></p=
re>
<pre><span lang=3D"EN-US">#date -s "Tue Jun 20 08:04:53 UTC 2023"=
<o:p></o:p></span></pre>
<pre><span lang=3D"EN-US">Tue Jun 20 08:04:53 UTC 2023<o:p></o:p></span></p=
re>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p> </o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:12.0pt;font-family:SimSun">~# ifconfig eth0<o=
:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:12.0pt;font-family:SimSun">eth0 Link encap:Et=
hernet HWaddr 58:77:78:80:F0:55
<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:12.0pt;font-family:SimSun"> =
inet6 addr: fdc0:2001:dd8:10::2/1=
28 Scope:Global<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:12.0pt;font-family:SimSun"> =
inet6 addr: fe80::5100:7fff:fe8f:f055/=
64 Scope:Link<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:12.0pt;font-family:SimSun"> =
UP BROADCAST RUNNING MTU:2000&nb=
sp; Metric:1<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:12.0pt;font-family:SimSun"> =
RX packets:231 errors:0 dropped:0 over=
runs:0 frame:0<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:12.0pt;font-family:SimSun"> =
TX packets:368 errors:0 dropped:0 over=
runs:0 carrier:0<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:12.0pt;font-family:SimSun"> =
collisions:0 txqueuelen:1000
<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:12.0pt;font-family:SimSun"> =
RX bytes:24290 (23.7 KiB) T=
X bytes:253899 (247.9 KiB)<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:12.0pt;font-family:SimSun"><o:p> </o:p><=
/span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:12.0pt;font-family:SimSun"><o:p></o:p></span>=
</p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:12.0pt;font-family:SimSun"><o:p> </o:p><=
/span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:12.0pt;font-family:SimSun">ifconfig eth0<o:p>=
</o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:12.0pt;font-family:SimSun">eth0 Link encap:Et=
hernet HWaddr 58:77:78:80:F0:55
<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:12.0pt;font-family:SimSun"> =
inet6 addr: fe80::5100:7fff:fe8f:=
f055/64 Scope:Link<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:12.0pt;font-family:SimSun"> =
UP BROADCAST RUNNING MTU:2000&nb=
sp; Metric:1<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:12.0pt;font-family:SimSun"> =
RX packets:298 errors:0 dropped:0 over=
runs:0 frame:0<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:12.0pt;font-family:SimSun"> =
TX packets:506 errors:0 dropped:0 over=
runs:0 carrier:0<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:12.0pt;font-family:SimSun"> =
collisions:0 txqueuelen:1000
<o:p></o:p></span></p>
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US" style=3D"font-size:12.0pt;font-family:SimSun"> =
RX bytes:29286 (28.5 KiB) T=
X bytes:435628 (425.4 KiB)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p> </o:p></span></p>
<pre><span lang=3D"EN-US">Many thanks in advance,<o:p></o:p></span></pre>
<p class=3D"MsoNormal"><span lang=3D"EN-US">BR/SK<o:p></o:p></span></p>
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