[rbak-nsp] Clips and multicast problem

[Rafal]

Hello

We distribute multicast using clips authorization.
Last days we have problem with random subscribers losing access to some multicast groups.

Only way I found to fix it, is to restart:
process restart IGMP

Part of config we using:

We bind it:

 dot1q pvc 2009
  description EVIOSTB0
  bind interface eviostream0 evio
  service clips dhcp context evio

And context:


!
 ip nat pool ip_evio_lan1_nat napt multibind
  address 178.214.23.65/32 port-block 1 to 15
!

 interface evstb0 multibind
  ip address 192.168.30.1/26

!
 interface eviostream0
  ip address 172.16.0.1/24
  pim sparse-mode passive
!

 nat policy ip_evio_lan1_nat_policy
! Default class
  ignore
  inbound-refresh udp
  icmp-notification
! Named classes
  access-group NATACL
   class NAT
    pool ip_evio_lan1_nat evio
    timeout tcp 6000
    endpoint-independent filtering udp
    inbound-refresh udp
    icmp-notification
   class NATLESS
    ignore
    inbound-refresh udp
    icmp-notification

 subscriber default
   ip multicast send permit
   ip multicast receive permit
   ip igmp service-profile IPTV1
   port-limit 1
!
 igmp service-profile IPTV1
  priority 10
!



from my observation it looks like when some subscribers is deauthenticated/disconnected he also prevent others from using multicast group
which he been using. 
Currently running SEOS-12.1.1.12

Any hints ?

Rafal