Hi，vpp experts
I have a task that send one packet to three NIC
my method is that use "vlib_buffer_alloc" function to copy three buffer，but
this method is poor performance，about that if vpp is 10G bps， once copy
will reduce 1.5G bps
is vpp has like dpdk buffer use refcnt count to avoid copy buffer？
Greetings, all. I've been using VPP with good success as a MAP-T BR
(border-relay) to do stateless v4/v6 translation. I would like to use the same
(or a very small number of ) DMR(s) in the environment to simplify addressing
and also allow things like putting DNS and NTP listeners in the v6-tran
