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我有两个接口（eth0 和 eth1），它们位于它们自己的子网（11.0.0.0/24 和 11.0.1.0/24）和网关（11.0.0.1 和 11.0.1.1）中。我想以这样一种方式配置 ECMP，以使来自我的主机的所有流量均等地分布在两个接口之间。我使用以下 ip 命令让它工作：

# Setting up default gateways for the two interfaces
ip route add 11.0.0.0/24 dev eth0 src 11.0.0.4 table rt1 
ip route add default via 11.0.0.1 table rt1 

ip route add 11.0.1.0/24 dev eth1 src 11.0.1.4 table rt2 
ip route add default via 11.0.1.1 table rt2 

# Adding routes to the main table
ip route add 11.0.0.0/24 dev eth0 src 11.0.0.4 
ip route add 11.0.1.0/24 dev eth1 src 11.0.1.4 

# Setting default route
ip route add default via 11.0.0.1 

# Adding routes
ip rule add from 11.0.0.4 table rt1 
ip rule add from 11.0.1.4 table rt2 

# Adding ECMP route
ip route add default scope global nexthop via 11.0.0.1 dev eth0 weight 1 nexthop via 11.0.1.1 dev eth1 weight 1

我正在尝试使用 Ubuntu 18.04 LTS 的 cloud-init 和 netplan 复制此设置。这是我正在使用的配置：

#cloud-config
network:
    version: 2
    ethernets:
        eth0:
            dhcp4: true
            dhcp4-overrides:
                route-metric: 100
            dhcp6: false
            match:
                driver: hv_netvsc
                macaddress: 00:22:48:20:af:fa
            set-name: eth0
            gateway4: 11.0.0.1
            routes:
                - to: 11.0.0.4/32
                  via: 11.0.0.1
                  table: 101
            routing-policy:
                - from: 11.0.0.4/32
                  table: 101
        eth1:
            dhcp4: true
            dhcp4-overrides:
                route-metric: 200
            dhcp6: false
            match:
                driver: hv_netvsc
                macaddress: 00:22:48:20:ab:1c
            set-name: eth1
            gateway4: 11.0.1.1
            routes:
                - to: 11.0.1.4/32
                  via: 11.0.1.1
                  table: 102
            routing-policy:
                - from: 11.0.1.4/32
                  table: 102
runcmd:
    - [sh, -c, 'echo "Adding route tables"']
    - [sh, -c, 'echo "101 rt1" >> /etc/iproute2/rt_tables']
    - [sh, -c, 'echo "102 rt2" >> /etc/iproute2/rt_tables']
    - [sh, -c, 'ip route add default scope global nexthop via 11.0.0.1 dev eth0 weight 1 nexthop via 11.0.1.1 dev eth1 weight 1']

我可能做错了一些非常简单和基本的事情，但这是我第一次使用网络和 cloud-init，所以我无法弄清楚我做错了什么。谢谢你的帮助！

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