I'm running Ubuntu 19.04 with systemd 240-6ubuntu5.7
systemd-networkd configuration:
```
# eno1.network
[Match]
Name=eno1
[Link]
Multicast=no
[Network]
LinkLocalAddressing=no
Address=192.168.50.249/24
Gateway=192.168.50.1
DNS=192.168.50.1
VLAN=pppoe
# pppoe.netdev
[NetDev]
Name=pppoe
Kind=vlan
[VLAN]
Id=1006
# pppoe.network
[Match]
Name=pppoe
[Link]
Multicast=no
ARP=no
[Network]
LinkLocalAddressing=no
```
result:
```
# ip a
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: eno1: <BROADCAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default
qlen 1000
link/ether 94:c6:91:18:8c:3c brd ff:ff:ff:ff:ff:ff
inet 192.168.50.249/24 brd 192.168.50.255 scope global eno1
valid_lft forever preferred_lft forever
3: wlp58s0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default
qlen 1000
link/ether 40:a3:cc:22:45:25 brd ff:ff:ff:ff:ff:ff
4: pppoe@eno1: <BROADCAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP
group default qlen 1000
link/ether 94:c6:91:18:8c:3c brd ff:ff:ff:ff:ff:ff
inet6 fe80::96c6:91ff:fe18:8c3c/64 scope link
valid_lft forever preferred_lft forever
5: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state
DOWN group default
link/ether 02:42:3c:35:9c:76 brd ff:ff:ff:ff:ff:ff
inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0
valid_lft forever preferred_lft forever
```
The pppoe interface still got an IPv6 link-local address.
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https://bugs.launchpad.net/bugs/1845909
Title:
IPv6 link local address is assigned even when
LinkLocalAddressing=no|ipv4
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