根据https://www.kernel.org/doc/Documentation/networking/ip-sysctl.txt
conf/all/* is special, changes the settings for all interfaces
forwarding - BOOLEAN
Enable IP forwarding on this interface. This controls whether packets
received _on_ this interface can be forwarded.
ip_forward - BOOLEAN
0 - disabled (default)
not 0 - enabled
Forward Packets between interfaces.
This variable is special, its change resets all configuration
parameters to their default state (RFC1122 for hosts, RFC1812
for routers)
因此，net.ipv4.conf.all.forwarding=0禁用所有接口上的 IPv4 数据包转发，与net.ipv4.ip_forward=0禁用所有接口上的 IPv4 数据包转发，与禁用所有接口上的 IPv4 数据包转发
net.ipv4.conf.all.forwarding任何人都可以解释一下内核参数和内核参数之间的区别吗net.ipv4.ip_forward …