I've bonded my wireless and wired network interfaces with
systemd-networkd using an active-backup mode.
These are the configuration files I have:
/etc/systemd/network/10-bond0.netdev
[NetDev]
Name=bond0
Kind=bond
[Bond]
Mode=active-backup
----
/etc/systemd/network/20-wired.network
[Match]
Name=enp0s25
[Network]
Bond=bond0
----
/etc/systemd/network/25-wireless.network
[Match]
Name=wlp2s0
[Network]
Bond=bond0
----
/etc/systemd/network/35-tethering.network
[Match]
Name=enp0s20u*
[Network]
Bond=bond0
----
/etc/systemd/network/40-bond0.network
[Match]
Name=bond0
[Network]
DHCP=yes
----
I've noticed that if I boot without any internet connection, WiFi or
Ethernet, and I connect to a WiFi network (only after the boot),
`wpa_supplicant` reports I'm connected to the WiFi network but I'm not
connected to the internet.
Here is the output of `networkctl status`:
● State: degraded
Address: fe80::a05d:c4ff:feca:efaa on bond0
And `networkctl list`:
IDX LINK TYPE OPERATIONAL SETUP
1 lo loopback carrier unmanaged
2 bond0 bond degraded configuring
3 enp0s25 ether no-carrier configuring
4 wlp2s0 wlan carrier configuring
4 links listed.
And the output of `ip addr`:
1: 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
2: bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 1500 qdisc
noqueue state UP group default qlen 1000
link/ether a2:5d:c4:ca:ef:aa brd ff:ff:ff:ff:ff:ff
inet6 fe80::a05d:c4ff:feca:efaa/64 scope link
valid_lft forever preferred_lft forever
3: enp0s25: <NO-CARRIER,BROADCAST,MULTICAST,SLAVE,UP> mtu 1500 qdisc
fq_codel master bond0 state DOWN group default qlen 1000
link/ether a2:5d:c4:ca:ef:aa brd ff:ff:ff:ff:ff:ff
4: wlp2s0: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc mq
master bond0 state UP group default qlen 1000
link/ether a2:5d:c4:ca:ef:aa brd ff:ff:ff:ff:ff:ff
Is this how it is supposed to behave? Is `systemd-networkd` supposed to be
used only for servers without roaming internet connections that change
after boot?
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