[bugfix] When add_eip, send an ARP packet from net1 to the gateway to…

… announce the EIP to the switch.

Signed-off-by: 杨凯龙 <[email protected]>

dist/images/vpcnatgateway/nat-gateway.sh

@@ -144,6 +144,7 @@ function add_eip() {
         exec_cmd "ip route replace default via $gateway dev net1"
         ip route | grep "default via $gateway dev net1"
         exec_cmd "arping -I net1 -c 3 -D $eip_without_prefix"
+        exec_cmd "arping -I net1 -c 1 -s $eip_without_prefix $gateway"
     done
 }