[IPV6] no index available when switching to ipv6 or ipv6only IP family

cbq> select * from `travel-sample` limit 10;

{

    "requestID": "a98244a2-b0e7-4865-95d4-4371a8c50648",

    "errors": [

        {

            "code": 4000,

            "msg": "No index available on keyspace `default`:`travel-sample` that matches your query. Use CREATE PRIMARY INDEX ON `default`:`travel-sample` to create a primary index, or check that your expected index is online."

        }

    ],

    "status": "fatal", 

[root@cluster logs]# /opt/couchbase/bin/couchbase-cli ip-family -c localhost -u Administrator -p password --set --ipv4

Switched IP family for node: http://cluster.couchbase.com:8091

SUCCESS: Switched IP family of the cluster

[root@cluster logs]# lsof -i -P -n  | grep LISTEN | grep couchbase| grep -i index

indexer   10900 couchbase   15u  IPv4 185082073      0t0  TCP *:9101 (LISTEN)

indexer   10900 couchbase   22u  IPv4 185078777      0t0  TCP *:9100 (LISTEN)

indexer   10900 couchbase   24u  IPv4 185078780      0t0  TCP *:9102 (LISTEN)

indexer   10900 couchbase   25u  IPv4 185078781      0t0  TCP *:19102 (LISTEN)

indexer   10900 couchbase  124u  IPv4 185082939      0t0  TCP *:9105 (LISTEN)

[root@cluster logs]# /opt/couchbase/bin/couchbase-cli ip-family -c localhost -u Administrator -p password --set --ipv6

Switched IP family for node: http://cluster.couchbase.com:8091

SUCCESS: Switched IP family of the cluster

[root@cluster logs]# lsof -i -P -n  | grep LISTEN | grep couchbase| grep -i index

indexer   11354 couchbase   15u  IPv6 185084236      0t0  TCP *:9101 (LISTEN)

indexer   11354 couchbase   22u  IPv6 185084263      0t0  TCP *:9100 (LISTEN)

indexer   11354 couchbase   24u  IPv6 185084935      0t0  TCP *:9102 (LISTEN)

indexer   11354 couchbase   25u  IPv6 185084936      0t0  TCP *:19102 (LISTEN)