This bug was fixed in the package systemd - 237-3ubuntu10.48
---------------
systemd (237-3ubuntu10.48) bionic; urgency=medium
* d/p/lp1925216-seccomp-rework-functions-for-parsing-system-call-fil.patch:
Downgrade syscall group parsing failure logs to debug (LP: #1925216)
https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/systemd/commit/?id=8c0181e24f7c0128a48c706d1f4b28ec0f225fd7
* d/p/lp1929560-network-move-set-MAC-and-set-nomaster-operations-out.patch:
Move link mac and master config out of link_up() (LP: #1929560)
https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/systemd/commit/?id=d808ea22366ca7ba4b5bb32815ab0ca2eea8a49f
* d/p/resolved-Mitigate-DVE-2018-0001-by-retrying-NXDOMAIN-with.patch,
d/p/resolved_disable-connection-downgrade-when-DNSSEC-yes.patch,
d/p/lp1880258-log-nxdomain-as-debug.patch,
d/p/lp1785383-resolved-address-DVE-2018-0001.patch:
- Use upstream patch for DVE-2018-0001 handling (LP: #1785383)
https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/systemd/commit/?id=b6258fda64c84c34b0f8026e6e29bcfffa8dc4f1
-- Dan Streetman <ddstr...@canonical.com> Thu, 27 May 2021 11:18:38
-0400
** Changed in: systemd (Ubuntu Bionic)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1929560
Title:
link mac isn't set if already up
Status in systemd:
Fix Released
Status in systemd package in Ubuntu:
Fix Released
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
Bug description:
[impact]
if link is already up, configured mac isn't set
this also affects the master/nomaster configuration
[test case]
create .network config for the link, for example:
[Match]
Name=eth0
[Link]
MACAddress=00:16:3e:ff:ff:ff
[Network]
DHCP=yes
make sure the link is already up, and restart systemd-networkd:
root@test-f:/etc/systemd/network# ip l show eth0
61: eth0@if62: <BROADCAST,MULTICAST> mtu 1500 qdisc noqueue state DOWN mode
DEFAULT group default qlen 1000
link/ether 00:16:3e:fc:b2:00 brd ff:ff:ff:ff:ff:ff link-netnsid 0
root@test-f:/etc/systemd/network# ip l set dev eth0 up
root@test-f:/etc/systemd/network# ip l show eth0
61: eth0@if62: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state
UP mode DEFAULT group default qlen 1000
link/ether 00:16:3e:fc:b2:00 brd ff:ff:ff:ff:ff:ff link-netnsid 0
root@test-f:/etc/systemd/network# systemctl restart systemd-networkd
root@test-f:/etc/systemd/network# ip l show eth0
61: eth0@if62: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state
UP mode DEFAULT group default qlen 1000
link/ether 00:16:3e:fc:b2:00 brd ff:ff:ff:ff:ff:ff link-netnsid 0
root@test-f:/etc/systemd/network# ip l set dev eth0 down
root@test-f:/etc/systemd/network# ip l show eth0
61: eth0@if62: <BROADCAST,MULTICAST> mtu 1500 qdisc noqueue state DOWN mode
DEFAULT group default qlen 1000
link/ether 00:16:3e:fc:b2:00 brd ff:ff:ff:ff:ff:ff link-netnsid 0
root@test-f:/etc/systemd/network# systemctl restart systemd-networkd
root@test-f:/etc/systemd/network# ip l show eth0
61: eth0@if62: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state
UP mode DEFAULT group default qlen 1000
link/ether 00:16:3e:ff:ff:ff brd ff:ff:ff:ff:ff:ff link-netnsid 0
[regression potential]
any regression would likely result in incorrectly set link mac and/or
master, or failure to correctly set mac and/or master
[scope]
this is needed for g and earlier
this is fixed upstream by commit
e16e4b3bedc57919b3ecb4096e941709a5d39b8a which is included in v247 so
this is fixed already in h and later
[other info]
this moves the configuration of the link mac and master out of the
link_up() function, so this also allows repeated calls to link_up()
without reconfiguring the link mac and master. That behavior is useful
for the commits for bug 1664844
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