Hi,
> I modified the startup.conf and enabled the tuntap interface.
> After vpp (vpp20.01) startup, it will create a tun interface named "vnet"
> in host linux. If I add an ip address to the physical interface, the same
> ip address will be added to vnet. But if I add an route entry, it will
> not. So the question is : Why vpp not synchronize route to host linux?
VPP does not synchronize Linux and VPP config.
If you use VPP native TAP driver ('create tap ...') you can specify the
'host-ip4-addr <ip4addr/mask>' to set an IP address on Linux side but it is
merely for convenience, and it is only done at init time. Any configuration
change in VPP will not be propagated to Linux and vice-versa.
The usual way is for your agent to configure both VPP and Linux.
Best
ben
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