Test Case:

========

->Configure BGP neighbor.

->configure 8 networks , 16 VMs . all 8 networks attached to router R1.

->configure vpn instance with 8 rds and associate router R1.

->configure ipv4 and ipv6 extra route with 8 VMs  one in each network as next hop.Check fib and dcgw for route propagation

->remove the extra route configuration using router update --no-routes option.

->Check fib, bgp deamon and dcgw and compute. 

Issue: After router update --no-routes, the ipv6 extra route is not removed from bgp deamon , dc-gw and from table 21 flow entries in computes.

Prefix which is not removed 2111:12f:862:18::/64. Attaching issue description which has more info on this.

On computes:
===========
root@compute-0-1:~# sh table.sh 21 | grep 2111
cookie=0x8000003, duration=25.884s, table=21, n_packets=0, n_bytes=0, priority=74,ipv6,metadata=0x33c82/0xfffffe,ipv6_dst=2111:12f:862:18::/64 actions=group:155065
root@compute-0-1:~# sh table.sh 21 | grep 20.0.0.0
root@compute-0-1:~# sh table.sh 20 | grep 106115
cookie=0x8000002, duration=98.773s, table=20, n_packets=0, n_bytes=0, priority=10,mpls,mpls_label=106115 actions=pop_mpls:0x86dd,group:155066
root@compute-0-1:~# sh table.sh 20 | grep 106114
root@compute-0-1:~#

root@compute-0-2:~# sh table.sh 21 | grep 2111
cookie=0x8000003, duration=42.001s, table=21, n_packets=0, n_bytes=0, priority=74,ipv6,metadata=0x33c82/0xfffffe,ipv6_dst=2111:12f:862:18::/64 actions=group:155065
root@compute-0-2:~# sh table.sh 21 | grep 20.0.0.0

root@compute-0-2:~# sh table.sh 20 | grep 106115
cookie=0x8000002, duration=123.718s, table=20, n_packets=0, n_bytes=0, priority=10,mpls,mpls_label=106115 actions=pop_mpls:0x86dd,group:155066
root@compute-0-2:~# sh table.sh 20 | grep 106114
root@compute-0-2:~#