upgrading systemd does restart networkd, but it should not remove any
existing managed configuration while restarting (or stopping). For
example:
ubuntu@lp1839231:~$ sudo systemctl start systemd-networkd
ubuntu@lp1839231:~$ ip a show ens3
2: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP
group default qlen 1000
link/ether 52:54:00:e8:e2:3f brd ff:ff:ff:ff:ff:ff
inet 192.168.122.25/24 brd 192.168.122.255 scope global dynamic ens3
valid_lft 3537sec preferred_lft 3537sec
inet6 fe80::5054:ff:fee8:e23f/64 scope link
valid_lft forever preferred_lft forever
ubuntu@lp1839231:~$ sudo systemctl stop systemd-networkd
Warning: Stopping systemd-networkd.service, but it can still be activated by:
systemd-networkd.socket
ubuntu@lp1839231:~$ ip a show ens3
2: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP
group default qlen 1000
link/ether 52:54:00:e8:e2:3f brd ff:ff:ff:ff:ff:ff
inet 192.168.122.25/24 brd 192.168.122.255 scope global dynamic ens3
valid_lft 3529sec preferred_lft 3529sec
inet6 fe80::5054:ff:fee8:e23f/64 scope link
valid_lft forever preferred_lft forever
ubuntu@lp1839231:~$ sudo systemctl start systemd-networkd
ubuntu@lp1839231:~$ ip a show ens3
2: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP
group default qlen 1000
link/ether 52:54:00:e8:e2:3f brd ff:ff:ff:ff:ff:ff
inet 192.168.122.25/24 brd 192.168.122.255 scope global dynamic ens3
valid_lft 3599sec preferred_lft 3599sec
inet6 fe80::5054:ff:fee8:e23f/64 scope link
valid_lft forever preferred_lft forever
What specific config is in your networkd config files? What specific
interface(s) or address(es) are you having trouble with?
** Changed in: systemd (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1839231
Title:
updating bionic to 237-3ubuntu10.25 restarts systemd-networkd
Status in systemd package in Ubuntu:
Incomplete
Bug description:
I updated my Ubuntu 18.04.2 server from systemd 237-3ubuntu10.24 to
237-3ubuntu10.25. This caused a restart of systemd-networkd, breaking
all TCP-over-IPv6 connections.
apt history entry:
Start-Date: 2019-08-06 19:46:21
Commandline: apt-get dist-upgrade -y
Requested-By: shivaram (1000)
Upgrade: libsystemd0:amd64 (237-3ubuntu10.24, 237-3ubuntu10.25), udev:amd64
(237-3ubuntu10.24, 237-3ubuntu10.25), libudev1:amd64 (237-3ubuntu10.24,
237-3ubuntu10.25), systemd-sysv:amd64 (237-3ubuntu10.24, 237-3ubuntu10.25),
libpam-systemd:amd64 (237-3ubuntu10.24, 237-3ubuntu10.25), systemd:amd64
(237-3ubuntu10.24, 237-3ubuntu10.25), libnss-systemd:amd64 (237-3ubuntu10.24,
237-3ubuntu10.25), base-files:amd64 (10.1ubuntu2.5, 10.1ubuntu2.6)
End-Date: 2019-08-06 19:54:17
systemd journal output:
Aug 06 19:47:40 pentos systemd[1]: Reloading.
Aug 06 19:47:57 pentos systemd[1]: Reexecuting.
Aug 06 19:47:58 pentos systemd[1]: systemd 237 running in system mode. (+PAM
+AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT
+GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN2 +IDN -PCRE2
default-hie
Aug 06 19:47:58 pentos systemd[1]: Detected architecture x86-64.
Aug 06 19:47:58 pentos systemd[1]: Stopping Network Service...
Aug 06 19:47:58 pentos systemd[1]: Stopped Network Service.
Aug 06 19:47:58 pentos systemd[1]: Starting Network Service...
Aug 06 19:47:59 pentos systemd-networkd[11513]: ens5: Gained IPv6LL
Aug 06 19:47:59 pentos systemd-networkd[11513]: Enumeration completed
Aug 06 19:47:59 pentos systemd[1]: Started Network Service.
Aug 06 19:47:59 pentos systemd-networkd[11513]: lo: Link is not managed by us
Aug 06 19:47:59 pentos systemd-networkd[11513]: ens5: DHCPv4 address
192.168.1.103/24 via 192.168.1.1
Aug 06 19:47:59 pentos dbus-daemon[947]: [system] Activating via systemd:
service name='org.freedesktop.hostname1'
unit='dbus-org.freedesktop.hostname1.service' requested by ':1.2341' (uid=100
pid=11513 comm="/lib/systemd/systemd-network
Aug 06 19:47:59 pentos systemd-networkd[11513]: ens5: Configured
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