Ubuntu
systemd package

systemd-networkd restart brings down bond slaves

  1. Bionic (18.04)
  2. Bug #1826387
Bug #1826387 reported by Krzysztof Klimonda
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
systemd
Fix Released
Unknown
systemd (Ubuntu)
Fix Released
Undecided
Unassigned
Bionic
New
Undecided
Unassigned
Cosmic
Won't Fix
Undecided
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Bug Description

Reported upstream as https://github.com/systemd/systemd/issues/10118

Ubuntu bionic, systemd version 237-3ubuntu10.19

When systemd-networkd is used to manage network bonds, upon systemd-networkd, bonds are brought down for ~10 seconds affecting connectivity to the server. From networkd logs (truncated to:

```
# journalctl -b -u systemd-networkd | grep enp3s0f
Apr 25 12:45:33 compute01 systemd-networkd[30824]: Ignoring /etc/systemd/network/01-enp3s0f1.network, because it's not a regular file with suffix .netdev.
Apr 25 12:45:33 compute01 systemd-networkd[30824]: Ignoring /etc/systemd/network/00-enp3s0f0.network, because it's not a regular file with suffix .netdev.
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f1: Flags change: +SLAVE +UP +LOWER_UP +RUNNING +MULTICAST +BROADCAST
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f1: Link 6 added
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f1: udev initialized link
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f1: Saved original MTU: 9000
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f0: Flags change: +SLAVE +UP +LOWER_UP +RUNNING +MULTICAST +BROADCAST
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f0: Link 3 added
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f0: udev initialized link
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f0: Saved original MTU: 9000
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f0: Link is not managed by us
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f1: Link is not managed by us
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f0: Link is not managed by us
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f1: Link is not managed by us
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f0: Link is not managed by us
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f1: Link is not managed by us
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f0: Link is not managed by us
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f1: Link is not managed by us
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f0: Link is not managed by us
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f1: Link is not managed by us
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f0: Link is not managed by us
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f1: Link is not managed by us
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f0: Link is not managed by us
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f1: Link is not managed by us
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f1: Link state is up-to-date
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f1: found matching network '/etc/systemd/network/01-enp3s0f1.network'
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f0: Link is not managed by us
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f1: Started LLDP.
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f1: Enslaving by 'bond0'
Apr 25 12:45:33 compute01 systemd-networkd[30824]: bond0: Link 'enp3s0f1' was up when attempting to enslave it. Bringing link down.
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f1: Bringing link down
Apr 25 12:45:33 compute01 systemd-networkd[30824]: bond0: Enslaving link 'enp3s0f1'
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f0: Link state is up-to-date
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f0: found matching network '/etc/systemd/network/00-enp3s0f0.network'
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f1: Link does not request DHCPv6 prefix delegation
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f0: Started LLDP.
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f0: Enslaving by 'bond0'
Apr 25 12:45:33 compute01 systemd-networkd[30824]: bond0: Link 'enp3s0f0' was up when attempting to enslave it. Bringing link down.
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f0: Bringing link down
Apr 25 12:45:33 compute01 systemd-networkd[30824]: bond0: Enslaving link 'enp3s0f0'
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f1: Flags change: -UP -LOWER_UP -RUNNING
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f1: Stopped LLDP.
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f1: Lost carrier
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f1: State is configuring, dropping config
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f1: Joined netdev
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f1: Bringing link up
Apr 25 12:45:33 compute01 systemd-networkd[30824]: enp3s0f1: IPv6 successfully enabled
Apr 25 12:45:34 compute01 systemd-networkd[30824]: enp3s0f0: Flags change: -UP -LOWER_UP -RUNNING
Apr 25 12:45:34 compute01 systemd-networkd[30824]: enp3s0f0: Stopped LLDP.
Apr 25 12:45:34 compute01 systemd-networkd[30824]: enp3s0f0: Lost carrier
Apr 25 12:45:34 compute01 systemd-networkd[30824]: enp3s0f0: State is configuring, dropping config
Apr 25 12:45:34 compute01 systemd-networkd[30824]: enp3s0f0: Joined netdev
Apr 25 12:45:34 compute01 systemd-networkd[30824]: enp3s0f0: Bringing link up
Apr 25 12:45:34 compute01 systemd-networkd[30824]: enp3s0f0: IPv6 successfully enabled
Apr 25 12:45:34 compute01 systemd-networkd[30824]: enp3s0f1: Flags change: +UP
Apr 25 12:45:34 compute01 systemd-networkd[30824]: enp3s0f1: Started LLDP.
Apr 25 12:45:34 compute01 systemd-networkd[30824]: enp3s0f0: Flags change: +UP +RUNNING
Apr 25 12:45:34 compute01 systemd-networkd[30824]: enp3s0f0: Started LLDP.
Apr 25 12:45:34 compute01 systemd-networkd[30824]: enp3s0f0: Gained carrier
Apr 25 12:45:34 compute01 systemd-networkd[30824]: enp3s0f0: Flags change: -RUNNING
Apr 25 12:45:34 compute01 systemd-networkd[30824]: enp3s0f0: Lost carrier
Apr 25 12:45:34 compute01 systemd-networkd[30824]: enp3s0f0: State is configuring, dropping config
Apr 25 12:45:37 compute01 systemd-networkd[30824]: enp3s0f0: Flags change: +LOWER_UP +RUNNING
Apr 25 12:45:37 compute01 systemd-networkd[30824]: enp3s0f0: Gained carrier
Apr 25 12:45:37 compute01 systemd-networkd[30824]: enp3s0f1: Flags change: +LOWER_UP +RUNNING
Apr 25 12:45:37 compute01 systemd-networkd[30824]: enp3s0f1: Gained carrier
```

Dan Streetman (ddstreet)
Changed in systemd (Ubuntu):
status: New → Fix Released
Bug Watch Updater (bug-watch-updater)
Changed in systemd:
status: Unknown → Fix Released
Dan Streetman (ddstreet)
Changed in systemd (Ubuntu Cosmic):
status: New → Won't Fix
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