> On Sep 1, 2022, at 10:33 PM, Casey Deccio <ca...@deccio.net> wrote:
>
> I've come across some unexpected changes in interface behavior between
> linux-image-5.10.0-13-amd64 and linux-image-5.10.0-17-amd64.
>
Relatedly, there is this behavior change:
linux-image-5.10.0-13-amd64:
$ sudo ip link add test1 type veth peer test2
$ ip addr | grep test[12]
2372: test2@test1: <BROADCAST,MULTICAST,M-DOWN> mtu 1500 qdisc noop state DOWN
group default qlen 1000
2373: test1@test2: <BROADCAST,MULTICAST,M-DOWN> mtu 1500 qdisc noop state DOWN
group default qlen 1000
linux-image-5.10.0-17-amd64:
$ sudo ip link add test1 type veth peer test2
$ ip addr | grep test[12]
214: test2@test1: <BROADCAST,MULTICAST,DYNAMIC,UP,LOWER_UP> mtu 1500 qdisc
noqueue state UP group default qlen 1000
215: test1@test2: <BROADCAST,MULTICAST,DYNAMIC,UP,LOWER_UP> mtu 1500 qdisc
noqueue state UP group default qlen 1000
Default DOWN vs. default UP.
Casey
