在连接到家庭局域网的Ubuntu 20.04计算机上，我在以太网设备下创建了macvlans：
$ sudo ip link add macvlan1 link enp37s0 type macvlan mode bridge
$ sudo dhclient macvlan1
$ sudo ip link add macvlan2 link enp37s0 type macvlan mode bridge
$ sudo dhclient macvlan2
偶然地，他们从DHCP获得了以下地址：
我可以从每个路由器ping我的路由器：
$ ping 192.168.0.1 -I macvlan1
PING 192.168.0.1 (192.168.0.1) from 192.168.0.40 macvlan1: 56(84) bytes of data.
64 bytes from 192.168.0.1: icmp_seq=1 ttl=64 time=0.713 ms
64 bytes from 192.168.0.1: icmp_seq=2 ttl=64 time=1.25 ms
64 bytes from 192.168.0.1: icmp_seq=3 ttl=64 time=1.20 ms
^C
--- 192.168.0.1 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2034ms
rtt min/avg/max/mdev = 0.713/1.052/1.245/0.240 ms
$ ping 192.168.0.1 -I macvlan2
PING 192.168.0.1 (192.168.0.1) from 192.168.0.41 macvlan2: 56(84) bytes of data.
64 bytes from 192.168.0.1: icmp_seq=1 ttl=64 time=1.15 ms
64 bytes from 192.168.0.1: icmp_seq=2 ttl=64 time=1.13 ms
64 bytes from 192.168.0.1: icmp_seq=3 ttl=64 time=1.07 ms
64 bytes from 192.168.0.1: icmp_seq=4 ttl=64 time=0.548 ms
64 bytes from 192.168.0.1: icmp_seq=5 ttl=64 time=0.619 ms
^C
--- 192.168.0.1 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4030ms
rtt min/avg/max/mdev = 0.548/0.903/1.148/0.263 ms
由于它们是在桥接模式下创建的，因此虚拟设备应相互连接。但是我不能彼此ping通：
$ ping 192.168.0.40 -I macvlan2
PING 192.168.0.40 (192.168.0.40) from 192.168.0.41 macvlan2: 56(84) bytes of data.
^C
--- 192.168.0.40 ping statistics ---
5 packets transmitted, 0 received, 100% packet loss, time 4128ms
$ ping 192.168.0.41 -I macvlan1
PING 192.168.0.41 (192.168.0.41) from 192.168.0.40 macvlan1: 56(84) bytes of data.
^C
--- 192.168.0.41 ping statistics ---
3 packets transmitted, 0 received, 100% packet loss, time 2039ms
为什么我不能互相ping通？如何解决这个问题？
Linux内核检测到具有本地源地址的传入数据包，将其视为路由错误（特定计算机发出的数据包永远不会回来），并丢弃它们以防止网络泛滥。
尝试将每个macvlan放入不同的网络名称空间（毕竟，macvlan被设计为可用于网络名称空间）。然后它应该工作。
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