ubuntu@lp1929560-b:~$ dpkg -l systemd|grep systemd
ii systemd 237-3ubuntu10.47 amd64 system and service manager
ubuntu@lp1929560-b:~$ ip l show dev ens3
2: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP
mode DEFAULT group default qlen 1000
link/ether 52:54:00:a0:0b:8d brd ff:ff:ff:ff:ff:ff
ubuntu@lp1929560-b:~$ sudo systemctl restart systemd-networkd
ubuntu@lp1929560-b:~$ ip l show dev ens3
2: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP
mode DEFAULT group default qlen 1000
link/ether 52:54:00:a0:0b:8d brd ff:ff:ff:ff:ff:ff
ubuntu@lp1929560-b:~$ sudo ip l set down dev ens3
ubuntu@lp1929560-b:~$ ip l show dev ens3
2: ens3: <BROADCAST,MULTICAST> mtu 1500 qdisc fq_codel state DOWN mode DEFAULT
group default qlen 1000
link/ether 52:54:00:a0:0b:8d brd ff:ff:ff:ff:ff:ff
ubuntu@lp1929560-b:~$ sudo systemctl restart systemd-networkd
ubuntu@lp1929560-b:~$ ip l show dev ens3
2: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP
mode DEFAULT group default qlen 1000
link/ether 00:16:3e:ff:ff:ff brd ff:ff:ff:ff:ff:ff
ubuntu@lp1929560-b:~$ dpkg -l systemd|grep systemd
ii systemd 237-3ubuntu10.48 amd64 system and service manager
ubuntu@lp1929560-b:~$ ip l show dev ens3
2: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP
mode DEFAULT group default qlen 1000
link/ether 52:54:00:a0:0b:8d brd ff:ff:ff:ff:ff:ff
ubuntu@lp1929560-b:~$ sudo systemctl restart systemd-networkd
ubuntu@lp1929560-b:~$ ip l show dev ens3
2: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP
mode DEFAULT group default qlen 1000
link/ether 00:16:3e:ff:ff:ff brd ff:ff:ff:ff:ff:ff
** Tags removed: verification-needed verification-needed-bionic
** Tags added: verification-done verification-done-bionic
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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to systemd in Ubuntu.
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 Committed
Status in systemd source package in Focal:
Fix Committed
Status in systemd source package in Groovy:
Fix Committed
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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