*** This bug is a duplicate of bug 1867375 ***
https://bugs.launchpad.net/bugs/1867375
Ahhh good to know, documentation in netplan.io doesn't reflect that
also, that is why I opened the bug. Funny because because of the
attribute name "UseRoutes" I was in doubt if it would get the default
gateway or just the published routes.. then the documentation said it
would get the default GW.
Thanks for letting me know Dan!
-> https://netplan.io/reference
Documenting it if anyone is confused by this as well:
"""
use-routes (bool)
Default: true. When true, the routes received from the DHCP server will be
installed in the routing table normally. When set to false, routes from the
DHCP server will be ignored: in this case, the user is responsible for adding
static routes if necessary for correct network operation. This allows users to
avoid installing a default gateway for interfaces configured via DHCP.
Available for both the networkd and NetworkManager backends.
"""
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https://bugs.launchpad.net/bugs/1872589
Title:
systemd-networkd is not honoring UseRoutes=false
Status in systemd package in Ubuntu:
Triaged
Bug description:
When netplan configures dhcp4-overrides and set "use-routes" to false,
systemd-networkd should be configured with UseRoutes=false. It is.
Unfortunately looks like systemd-networkd is not honoring it and
configuring the default gateways for the interfaces no matter what.
Ubuntu Focal: systemd: 245.4-2ubuntu1
----
$ sudo cat /etc/netplan/50-cloud-init.yaml
network:
ethernets:
enp5s0:
match:
macaddress: 00:16:3e:af:c4:d6
set-name: eth0
dhcp4: true
dhcp-identifier: mac
enp6s0:
match:
macaddress: 00:16:3e:50:11:9c
set-name: iscsi01
dhcp4: true
dhcp-identifier: mac
dhcp4-overrides:
use-routes: false
enp7s0:
match:
macaddress: 00:16:3e:b3:cc:50
set-name: iscsi02
dhcp4: true
dhcp-identifier: mac
dhcp4-overrides:
use-routes: false
version: 2
renderer: networkd
----
$ cat /var/run/systemd/network/10-netplan-enp6s0.network
[Match]
MACAddress=00:16:3e:50:11:9c
Name=iscsi01
[Network]
DHCP=ipv4
LinkLocalAddressing=ipv6
[DHCP]
ClientIdentifier=mac
RouteMetric=100
UseMTU=true
UseRoutes=false
--
$ ip route show | grep default
default via 10.250.93.1 dev iscsi02 proto dhcp src 10.250.93.101 metric 100
default via 10.250.94.1 dev iscsi01 proto dhcp src 10.250.94.167 metric 100
default via 10.250.97.1 dev eth0 proto dhcp src 10.250.97.123 metric 100
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