Hi, We have integrated linux-cp and linux-nl plugin in VPP. We create table 1203 on VPP and on linux (in namespace dataplane). We added a blackhole route on linux using below command:- sudo ip netns exec dataplane ip -6 route add blackhole 2001:50:10:a111::101/64 table 1203
When I view this route on VPP it shows something like this:- vpp# show ip6 fib table 1203 2001:50:10:a111::/64 unicast-ip6-chain [@0]: dpo-load-balance: [proto:ip6 index:88 buckets:1 uRPF:76 to:[164:17056]] [0] [@0]: dpo-drop ip6 After this If I try to add or overwrite this route with another route but VPP is not able to overwrite it. I executed below command:- vppctl ip route add 2001:50:10:a111::101/64 table 1203 via ipip19 where ipip19 is an ipip tunnel created by us. When I try to view the updated route on VPP it is still showing blackhole route:- vpp# show ip6 fib table 1203 2001:50:10:a111::/64 unicast-ip6-chain [@0]: dpo-load-balance: [proto:ip6 index:88 buckets:1 uRPF:76 to:[164:17056]] [0] [@0]: dpo-drop ip6 Why VPP is not able to overwrite the blackhole route with the new route? Also, is there a way by which we can prevent blackhole routes (added in linux) getting leaked into VPP? Thanks and Regards, Chinmaya Agarwal.
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