This bug was fixed in the package systemd - 237-3ubuntu10.44
---------------
systemd (237-3ubuntu10.44) bionic; urgency=medium
* d/extra/dhclient-enter-resolved-hook:
suppress output of cmp command in dhclient hook (LP: #1878955)
https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/systemd/commit/?id=c5a2db69aafc7a3ab4e71bae44fd7ad9dd955c97
*
d/p/lp1905044/0001-capability-add-a-way-to-get-a-uint64_t-with-all-caps.patch,
d/p/lp1905044/0002-test-use-cap_last_cap-for-max-supported-cap-number-n.patch:
test: use cap_last_cap() instead of capability_list_length()
(LP: #1905044)
https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/systemd/commit/?id=34ebc6e28e63881d40c91c5839597acc2fdab546
* d/p/lp1905245/0001-basic-cap-list-parse-print-numerical-capabilities.patch:
print number of unknown capabilities instead of failing
(LP: #1905245)
https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/systemd/commit/?id=5ab225b7f731c6cf6b4655cb27c3a842150c4c1a
*
d/p/lp1907306/0001-sd-dhcp-client-don-t-log-timeouts-if-already-expired.patch,
d/p/lp1907306/0002-sd-dhcp-client-track-dhcp4-t1-t2-expire-times.patch,
d/p/lp1907306/0003-sd-dhcp-client-add-RFC2131-retransmission-details.patch,
d/p/lp1907306/0004-sd-dhcp-client-simplify-dhcp4-t1-t2-parsing.patch,
d/p/lp1907306/0005-sd-dhcp-client-correct-dhcpv4-renew-rebind-retransmi.patch,
d/p/lp1907306/0008-sd-dhcp-client-fix-renew-rebind-timeout-calculation-.patch:
Send correct number of dhcpv4 renew and rebind requests
(LP: #1907306)
https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/systemd/commit/?id=036230cac8232bf4f970e565c355ee1a82fc2ee6
* d/t/root-unittests:
Remove any corrupt journal files (LP: #1881947)
https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/systemd/commit/?id=b284b93e40b6cb834bb40dd3db94850853ab5bb8
-- Dan Streetman <ddstr...@canonical.com> Wed, 06 Jan 2021 16:04:25
-0500
** Changed in: systemd (Ubuntu Bionic)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1907306
Title:
networkd dhcpv4 client never attempts more than 2 renew and 2 rebind
Status in systemd:
Fix Released
Status in systemd package in Ubuntu:
In Progress
Status in systemd source package in Bionic:
Fix Released
Status in systemd source package in Focal:
Fix Released
Status in systemd source package in Groovy:
Fix Released
Status in systemd source package in Hirsute:
In Progress
Bug description:
[impact]
networkd dhcpv4 client never attempts more than 2 renew and 2 rebind
[test case]
configure an interface to use dhcpv4; acquire a dhcpv4 address, then
stop the dhcpv4 server, and wait for the networkd client to perform
its renewals and rebinds before expiring the lease
using a 20 minute lease time as an example (all times are approximate
due to RFC-mandated random 'fuzz' time of -1 to +1 sec):
the current behavior would be to sent renew requests at:
10:00
13:45
and then rebind requests at:
17:30
18:45
then the lease would expire at 20:00
the correct/new behavior should be renew requests at:
10:00
13:45
15:37
16:37
and then rebind requests at:
17:30
18:45
19:45
and then lease expiration at 20:00.
longer lease times would increase the number of retransmissions.
[regression potential]
any regression would likely result in problems receiving and/or
maintaining a dhcpv4 address
[scope]
this is needed in b/f/g/h.
this was fixed upstream in:
https://github.com/systemd/systemd/pull/17908
that was just added, so this is not fixed in any ubuntu release yet.
technically, this is needed in x as well, however I don't plan to
backport to x since 1) it reaches ESM soon and 2) the default network
management tool in x is ifupdown, not systemd-networkd.
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