Hello,
I've verified this with disco-updates.
/etc/systemd/network/80-ens3.network
::::::::::::::
[Match]
Name=ens3
[Network]
DHCP=ipv4
LinkLocalAddressing=ipv6
Address=172.16.0.5/24
root@disco-test:/home/ubuntu# ip -4 a show ens3
2: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP
group default qlen 1000
inet 172.16.0.5/24 brd 172.16.0.255 scope global ens3
valid_lft forever preferred_lft forever
inet 172.16.0.21/24 brd 172.16.0.255 scope global secondary dynamic ens3
valid_lft 3485sec preferred_lft 3485sec
root@disco-test:/home/ubuntu# ip route
default via 172.16.0.1 dev ens3 proto dhcp src 172.16.0.21 metric 1024
172.16.0.0/24 dev ens3 proto kernel scope link src 172.16.0.5
172.16.0.1 dev ens3 proto dhcp scope link src 172.16.0.21 metric 1024
root@disco-test:/home/ubuntu# ip r get 1.1.1.1
1.1.1.1 via 172.16.0.1 dev ens3 src 172.16.0.21 uid 0
cache
-> setting classless option
ubuntu@disco-test:~$ sudo su
root@disco-test:/home/ubuntu# ip -4 a show ens3
2: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP
group default qlen 1000
inet 172.16.0.5/24 brd 172.16.0.255 scope global ens3
valid_lft forever preferred_lft forever
inet 172.16.0.21/24 brd 172.16.0.255 scope global secondary dynamic ens3
valid_lft 3575sec preferred_lft 3575sec
root@disco-test:/home/ubuntu# ip r
default via 172.16.0.1 dev ens3 proto dhcp metric 1024
172.16.0.0/24 dev ens3 proto kernel scope link src 172.16.0.5
root@disco-test:/home/ubuntu# ip r get 1.1.1.1
1.1.1.1 via 172.16.0.1 dev ens3 src 172.16.0.5 uid 0
cache
-----> With the proposed package
ubuntu@disco-test:~$ sudo su
root@disco-test:/home/ubuntu# ip -4 a show ens3
2: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP
group default qlen 1000
inet 172.16.0.5/24 brd 172.16.0.255 scope global ens3
valid_lft forever preferred_lft forever
inet 172.16.0.21/24 brd 172.16.0.255 scope global secondary dynamic ens3
valid_lft 3589sec preferred_lft 3589sec
root@disco-test:/home/ubuntu# ip r get 1.1.1.1
1.1.1.1 via 172.16.0.1 dev ens3 src 172.16.0.21 uid 0
cache
root@disco-test:/home/ubuntu# ip r
default via 172.16.0.1 dev ens3 proto dhcp src 172.16.0.21 metric 1024
172.16.0.0/24 dev ens3 proto kernel scope link src 172.16.0.5
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https://bugs.launchpad.net/bugs/1835581
Title:
networkd-dhcp4 does not set prefsrc for dhcp-provided classless or
static routes
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