서로 다른 인터페이스가 모두 동일한 Mac 주소를 갖는 이유를 누군가 설명해 줄 수 있나요? eth0.1 이하, eth0.2, wlan0은 모두 동일한 mac 주소를 가지고 있는데 정상인가요?
ip link show eth0.1
6: eth0.1@eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-lan state UP qlen 1000
link/ether 80:2a:a8:73:7d:39 brd ff:ff:ff:ff:ff:ff
ip link show eth0.2
7: eth0.2@eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP qlen 1000
link/ether 80:2a:a8:73:7d:39 brd ff:ff:ff:ff:ff:ff
ip link show wlan0
4: wlan0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
link/ether 80:2a:a8:72:7d:39 brd ff:ff:ff:ff:ff:ff