无法将 macvlan 连接到互联网

无法将 macvlan 连接到互联网

当我尝试连接macvlan到互联网时,没有成功。我使用命名空间来实现这一点。我还查看了这个问题的评论 -如何将 macvlan 连接到互联网?

我有 AWS 的 EC2(Ubuntu 20.04)虚拟机,在其中执行了以下命令:

sudo ip netns add net1;
sudo ip link add macvlan1 link eth0 type macvlan mode bridge;
sudo ip link set macvlan1 netns net1;
sudo ip netns exec net1 ip address add 172.31.20.45 peer 172.31.16.1/32 dev macvlan1;
sudo ip netns exec net1 ip link set macvlan1 up; sudo ip netns exec net1 ip link set lo up;
sudo ip netns exec net1 ip route add default via 172.31.16.1;
sudo ip netns exec net1 su -c "screen";                           

尝试从命名空间 ping Google 的 DNS 服务器(连接到互联网)

root@aws:/home/meliwex# ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
From 172.31.20.45 icmp_seq=1 Destination Host Unreachable

尝试 ping 网关

root@aws:/home/meliwex# ping 172.31.16.1
PING 172.31.16.1 (172.31.16.1) 56(84) bytes of data.
From 172.31.20.45 icmp_seq=1 Destination Host Unreachable

ifconfig主机中的输出(我保持输出简单):

docker0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 172.17.0.1  netmask 255.255.0.0  broadcast 172.17.255.255
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 9001
        inet 172.31.20.45  netmask 255.255.240.0  broadcast 172.31.31.255
lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0

主机的路由表:

Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         172.31.16.1     0.0.0.0         UG    100    0        0 eth0
172.17.0.0      0.0.0.0         255.255.0.0     U     0      0        0 docker0
172.31.16.0     0.0.0.0         255.255.240.0   U     0      0        0 eth0
172.31.16.1     0.0.0.0         255.255.255.255 UH    100    0        0 eth0

命名空间中的输出ifconfig(我保持输出简单):

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
macvlan1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 9001
        inet 172.31.20.45  netmask 255.255.255.255  broadcast 0.0.0.0

命名空间的路由表:

Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         172.31.16.1     0.0.0.0         UG    0      0        0 macvlan1
172.31.16.1     0.0.0.0         255.255.255.255 UH    0      0        0 macvlan1

那么可以解决这个问题吗?

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