# uname -a
Linux rare-stork 4.15.0-33-generic #36-Ubuntu SMP Wed Aug 15 13:42:17 UTC 2018 s390x s390x s390x GNU/Linux
# ip -4 addr show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
3: bond0.100@bond0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
inet 10.132.106.86/24 brd 10.132.106.255 scope global bond0.100
valid_lft forever preferred_lft forever
# ip link set dev bond0 down
# ip -4 addr show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
# ip link set dev bond0 up
# ip -4 addr show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
3: bond0.100@bond0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
inet 10.132.106.86/24 brd 10.132.106.255 scope global bond0.100
valid_lft forever preferred_lft forever
#
Same results on a lxd container on a bionic kernel.
# uname -a UP,LOWER_ UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 MULTICAST, UP,LOWER_ UP> mtu 1500 qdisc noqueue state UP group default qlen 1000 UP,LOWER_ UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 UP,LOWER_ UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 MULTICAST, UP,LOWER_ UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
Linux rare-stork 4.15.0-33-generic #36-Ubuntu SMP Wed Aug 15 13:42:17 UTC 2018 s390x s390x s390x GNU/Linux
# ip -4 addr show
1: lo: <LOOPBACK,
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
3: bond0.100@bond0: <BROADCAST,
inet 10.132.106.86/24 brd 10.132.106.255 scope global bond0.100
valid_lft forever preferred_lft forever
# ip link set dev bond0 down
# ip -4 addr show
1: lo: <LOOPBACK,
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
# ip link set dev bond0 up
# ip -4 addr show
1: lo: <LOOPBACK,
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
3: bond0.100@bond0: <BROADCAST,
inet 10.132.106.86/24 brd 10.132.106.255 scope global bond0.100
valid_lft forever preferred_lft forever
#
Same results on a lxd container on a bionic kernel.