Public bug reported:
I recently installed Ubuntu Server 20.04 to replace an ESXi server.
During the installation, I configured a bonded interface for two
ethernet interfaces. I configured the bond on my ZyXel GS1900-8 as a
static LAG. During the setup process, the link came up successfully and
was leased an IP via DHCP.
All subsequent boots have failed to acquire an IP address for the bonded
interface. Sometimes, if I allow dhcp4 on the enslaved interfaces, and
run sudo dhclient -r && sudo dhclient, the enslaved interfaces will be
leased an IP address _and_ the bond will get an IP address. I know this
is not proper as dhclient and systemd-networkd do not mix.
Also, I would like to configure this as a LACP bond instead. I have
enabled LACP on the switch with priority 65535 and "IP/MAC address" load
balancing algorithm, switched the LAG from static to LACP, and altered
netplan to use the 802.3ad bond mode.
Please let me know what, if anything, I'm doing wrong here. I've looked
around at as many netplan DHCP bond posts here as I could find to no
avail. See below for configuration files and command outputs. I cannot
give you the output of `lsb_release -rd` as the package is not installed
and there's no connection to install it.
$ cat /etc/netplan/00-bond.yaml
network:
version: 2
renderer: networkd
ethernets:
eth0:
dhcp4: false
eth1:
dhcp4: false
bonds:
bond0:
dhcp4: true
interfaces:
- eth0
- eth1
parameters:
mode: 802.3ad
$ sudo journalctl -b -u systemd-networkd
Dec 14 08:06:47 lore systemd[1]: Starting Network Service...
Dec 14 08:06:47 lore systemd-networkd[852]: bond0: netdev ready
Dec 14 08:06:47 lore systemd-networkd[852]: Enumeration completed.
Dec 14 08:06:47 lore systemd[1]: Started Network Service.
Dec 14 08:06:47 lore systemd-networkd[852]: bond0: IPv6 successfully enabled
Dec 14 08:06:47 lore systemd-networkd[852]: bond0: Link UP
Dec 14 08:08:53 lore systemd-networkd[852]: rtn1: received neighbor for link
'7' we don't know about, ignoring.
Dec 14 08:08:53 lore systemd-networkd[852]: rtn1: received neighbor for link
'7' we don't know about, ignoring.
Dec 14 08:08:53 lore systemd-networkd[852]: rtn1: received neighbor for link
'7' we don't know about, ignoring.
Dec 14 08:08:53 lore systemd-networkd[852]: rtn1: received neighbor for link
'7' we don't know about, ignoring.
Dec 14 08:08:53 lore systemd-networkd[852]: docker0: Link UP
$ sudo ip a
lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred lft forever
inet6 ::1/128 scope host
valid_lft forever preferred lft forever
eno1: <BROADCAST,MULTICAST> mtu 1500 qdisk noop state DOWN group default qlen
1000
link/ether 0c:c4:7a:c6:c3:46 brd ff:ff:ff:ff:ff:ff
eno2: <BROADCAST,MULTICAST> mtu 1500 qdisk noop state DOWN group default qlen
1000
link/ether 0c:c4:7a:c6:c3:47 brd ff:ff:ff:ff:ff:ff
eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen
1000
link/ether 0c:c4:7a:c6:c6:a2 brd ff:ff:ff:ff:ff:ff
eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen
1000
link/ether 0c:c4:7a:c6:c6:a3 brd ff:ff:ff:ff:ff:ff
bond0: <NO-CARRIER,BROADCAST,MULTICAST,MASTER,UP> mtu 1500 qdisk noqueue state
DOWN group default qlen 1000
link/ether 52:8b:2c:cc:a0:15 brd ff:ff:ff:ff:ff:ff
docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN
group default
link/ether 02:42:26:1c:1b:39 brd ff:ff:ff:ff:ff:ff
inet 172.17.0.1/16 brd 172.17.255.255 scope global docker 0
valid_lft forever preferred_lft forever
$ cat /run/systemd/network/10-netplan-bond0.netdev
[NetDev]
Name=bond0
Kind=bond
[Bond]
Mode=802.3ad
$ cat /run/systemd/network/10-netplan-bond0.network
[Match]
Name=bond0
[Network]
DHCP=ipv4
LinkLocalAddressing=ipv6
ConfigureWithoutCarrier=yes
[DHCP]
RouteMetric=100
UseMTU=true
$ cat /run/systemd/network/10-netplan-eth0.network
[Match]
Name=eth0
[Network]
LinkLocalAddressing=no
Bond=bond0
$ cat /run/systemd/network/10-netplan-eth1.network
[Match]
Name=eth1
[Network]
LinkLocalAddressing=no
Bond=bond0
$ cat /proc/net/bonding/bond0
Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)
Bonding Mode: IEEE 802.3ad Dynamic link aggregation
Transmit Hash Policy: layer2 (0)
MII Status: down
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0
Peer Notification Delay (ms): 0
802.3ad info
LACP rate: slow
Min links: 0
Aggregator selection policy (ad_select): stable
** Affects: systemd (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1908140
Title:
Bond DHCP fails on Ubuntu Server 20.04 netplan
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