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9d50518591
As shown in the following example, ifupdown1 sets the default route with the
onlink attribute. This patch will add this capability to ifupdown2 controlled
by a policy variable in the address module: "l3_intf_default_gateway_set_onlink"
default to on
[19:16:07] root:~ # cat /etc/network/interfaces
auto lo
iface lo inet loopback
auto enp0s3
iface enp0s3 inet static
address 78.46.193.234/32
gateway 172.31.1.1
[19:16:19] root:~ # ifup -a -v
ifup: configuring interface enp0s3=enp0s3 (inet)
...
/bin/ip addr add 78.46.193.234/255.255.255.255 broadcast 78.46.193.234 dev enp0s3 label enp0s3
/bin/ip link set dev enp0s3 up
/bin/ip route add default via 172.31.1.1 dev enp0s3 onlink
...
[19:16:21] root:~ # ip route show
default via 172.31.1.1 dev enp0s3 onlink
10.0.2.0/24 dev enp0s3 proto kernel scope link src 10.0.2.15
169.254.0.0/16 dev enp0s3 scope link metric 1000
[19:16:21] root:~ #
$ cat /etc/network/ifupdown2/policy.d/address.json
{
"address": {
"module_globals": {
"l3_intf_default_gateway_set_onlink": "yes"
}
}
}
$ ifquery swp1
auto swp1
iface swp1 inet static
address 78.46.193.234/32
gateway 172.31.1.1
$ ifreload -av |& grep "route add default"
info: executing /bin/ip route add default via 172.31.1.1 proto kernel dev swp1 onlink
$
$
$ emacs -nw /etc/network/ifupdown2/policy.d/address.json
$ cat /etc/network/ifupdown2/policy.d/address.json
{
"address": {
"module_globals": {
"l3_intf_default_gateway_set_onlink": "no"
}
}
}
$ ifdown -a -X eth0
$ ifreload -av |& grep "route add default"
info: executing /bin/ip route add default via 172.31.1.1 proto kernel dev swp1
$
Signed-off-by: Julien Fortin <julien@cumulusnetworks.com>