After removing PIMv6 from receiver interface upstream in Notjoin but mroute installed

[vijaykug]

Issue-

TG---R1------R2------R3---TG

I have removed pimv6 "no ipv6 pim" config from R1 ( receiver connected interface) , after that observed that (,G) upstream went to Not join state , but (.G) mroute installed for same group.

interface r1-i1-eth0
no ipv6 pim

r1# do show ipv6 pim upstream
 Iif         Source         Group    State   Uptime    JoinTimer  RSTimer   KATimer   RefCnt  
 r1-r2-eth3  *              ffaa::1  NotJ    01:40:00  00:00:52   --:--:--  --:--:--  1       
 r1-r2-eth3  fd00:0:0:1::1  ffaa::1  J       01:40:01  00:00:52   --:--:--  00:03:18  2       
 r1-i6-eth1  fd00:0:0:5::1  ffaa::1  J,RegP  01:40:02  --:--:--   00:00:04  00:03:23  1       
 r1-r2-eth3  *              ffaa::2  NotJ    01:40:00  00:00:52   --:--:--  --:--:--  1       
 r1-r2-eth3  fd00:0:0:1::1  ffaa::2  J       01:40:01  00:00:52   --:--:--  00:03:19  2       
 r1-i6-eth1  fd00:0:0:5::1  ffaa::2  J,RegP  01:40:02  --:--:--   00:00:43  00:03:26  1       
 r1-r2-eth3  *              ffaa::3  NotJ    01:40:00  00:00:52   --:--:--  --:--:--  1       
 r1-r2-eth3  fd00:0:0:1::1  ffaa::3  J       01:40:01  00:00:52   --:--:--  00:03:28  2       
 r1-i6-eth1  fd00:0:0:5::1  ffaa::3  J,RegP  01:40:02  --:--:--   00:00:29  00:03:02  1       
 r1-r2-eth3  *              ffaa::4  NotJ    01:40:00  00:00:52   --:--:--  --:--:--  1       
 r1-r2-eth3  fd00:0:0:1::1  ffaa::4  J       01:40:01  00:00:52   --:--:--  00:03:24  2       
 r1-i6-eth1  fd00:0:0:5::1  ffaa::4  J,RegP  01:40:02  --:--:--   00:00:11  00:03:05  1       
 r1-r2-eth3  *              ffaa::5  NotJ    01:40:00  00:00:52   --:--:--  --:--:--  1       
 r1-r2-eth3  fd00:0:0:1::1  ffaa::5  J       01:40:01  00:00:52   --:--:--  00:02:59  2       
 r1-i6-eth1  fd00:0:0:5::1  ffaa::5  J,RegP  01:40:02  --:--:--   00:00:47  00:03:07  1       

r1# do show ipv6 mroute 
IP Multicast Routing Table
Flags: S - Sparse, C - Connected, P - Pruned
       R - SGRpt Pruned, F - Register flag, T - SPT-bit set
 Source         Group    Flags  Proto  Input       Output      TTL  Uptime    
 *              ffaa::1  SC     MLD    r1-r2-eth3  pim6reg     1    01:40:15  
                                MLD                r1-i1-eth0  1              
 fd00:0:0:1::1  ffaa::1  ST     STAR   r1-r2-eth3  r1-i1-eth0  1    01:40:13  
 fd00:0:0:5::1  ffaa::1  SFT    STAR   r1-i6-eth1  r1-i1-eth0  1    01:40:14  
 *              ffaa::2  SC     MLD    r1-r2-eth3  pim6reg     1    01:40:15  
                                MLD                r1-i1-eth0  1              
 fd00:0:0:1::1  ffaa::2  ST     STAR   r1-r2-eth3  r1-i1-eth0  1    01:40:13  
 fd00:0:0:5::1  ffaa::2  SFT    STAR   r1-i6-eth1  r1-i1-eth0  1    01:40:14  
 *              ffaa::3  SC     MLD    r1-r2-eth3  pim6reg     1    01:40:15  
                                MLD                r1-i1-eth0  1              
 fd00:0:0:1::1  ffaa::3  ST     STAR   r1-r2-eth3  r1-i1-eth0  1    01:40:13  
 fd00:0:0:5::1  ffaa::3  SFT    STAR   r1-i6-eth1  r1-i1-eth0  1    01:40:14  
 *              ffaa::4  SC     MLD    r1-r2-eth3  pim6reg     1    01:40:15  
                                MLD                r1-i1-eth0  1              
 fd00:0:0:1::1  ffaa::4  ST     STAR   r1-r2-eth3  r1-i1-eth0  1    01:40:13  
 fd00:0:0:5::1  ffaa::4  SFT    STAR   r1-i6-eth1  r1-i1-eth0  1    01:40:14  
 *              ffaa::5  SC     MLD    r1-r2-eth3  pim6reg     1    01:40:15  
                                MLD                r1-i1-eth0  1              
 fd00:0:0:1::1  ffaa::5  ST     STAR   r1-r2-eth3  r1-i1-eth0  1    01:40:13  
 fd00:0:0:5::1  ffaa::5  SFT    STAR   r1-i6-eth1  r1-i1-eth0  1    01:40:14  

Ubuntu - 18.04
Kernel - 6.1.2-060102-generic
Latest master build

[patrasar]

@SaiGomathiN, as discussed offline please look into this issue.

Thank you

[patrasar]

The issue is reproducible in both PIMV4 and PIMV6.

[github-actions]

This issue is stale because it has been open 180 days with no activity. Comment or remove the autoclose label in order to avoid having this issue closed.

[frrbot]

This issue will be automatically closed in the specified period unless there is further activity.