+
+sleep 180
+
+#Rehash port numbers and re-run five streams every minute
+while true; do
+ vppctl packet-gen disable
+ vppctl pac del dns1
+ vppctl pac del dns2
+ vppctl pac del dns3
+ vppctl pac del dns4
+ vppctl pac del dns5
+
+ #Update destination (vLB) IP
+ VLB_IPADDR=$(cat /opt/config/vlb_ipaddr.txt)
+ IPADDR1=$(cat /opt/config/local_private_ipaddr.txt)
+ sed -i -e "0,/UDP/ s/UDP:.*/UDP: "$IPADDR1" -> "$VLB_IPADDR"/" /opt/dns_streams/stream_dns1
+ sed -i -e "0,/UDP/ s/UDP:.*/UDP: "$IPADDR1" -> "$VLB_IPADDR"/" /opt/dns_streams/stream_dns2
+ sed -i -e "0,/UDP/ s/UDP:.*/UDP: "$IPADDR1" -> "$VLB_IPADDR"/" /opt/dns_streams/stream_dns3
+ sed -i -e "0,/UDP/ s/UDP:.*/UDP: "$IPADDR1" -> "$VLB_IPADDR"/" /opt/dns_streams/stream_dns4
+ sed -i -e "0,/UDP/ s/UDP:.*/UDP: "$IPADDR1" -> "$VLB_IPADDR"/" /opt/dns_streams/stream_dns5
+
+ #Update source ports (make them random)
+ sed -i -e "s/.*-> 53.*/ UDP: $RANDOM -> 53/" /opt/dns_streams/stream_dns1
+ sed -i -e "s/.*-> 53.*/ UDP: $RANDOM -> 53/" /opt/dns_streams/stream_dns2
+ sed -i -e "s/.*-> 53.*/ UDP: $RANDOM -> 53/" /opt/dns_streams/stream_dns3
+ sed -i -e "s/.*-> 53.*/ UDP: $RANDOM -> 53/" /opt/dns_streams/stream_dns4
+ sed -i -e "s/.*-> 53.*/ UDP: $RANDOM -> 53/" /opt/dns_streams/stream_dns5
+
+ vppctl exec /opt/dns_streams/stream_dns1
+ vppctl exec /opt/dns_streams/stream_dns2
+ vppctl exec /opt/dns_streams/stream_dns3
+ vppctl exec /opt/dns_streams/stream_dns4
+ vppctl exec /opt/dns_streams/stream_dns5
+
+ #Resume stream execution
+ vppctl packet-gen enable-stream dns1
+ vppctl packet-gen enable-stream dns2
+ vppctl packet-gen enable-stream dns3
+ vppctl packet-gen enable-stream dns4
+ vppctl packet-gen enable-stream dns5
+
+ sleep 60
+done
\ No newline at end of file