multicast being discarded at the ue on 2021_10 release

[jgiovatto]

trafficstars

Issue Description

Downlink multicast is being discarded at the ue on the 2021_10 release.

Expected Behavior

Multicast packets to be written out to the ue tuntap device.

Actual Behaviour

2021-11-14T22:40:16.746002 [PHY0 ] [I] [ 9601] PMCH: l_crb=50,tbs=277, mcs=2, crc=OK, snr=143.0 dB, n_iter=2.0 2021-11-14T22:40:16.746005 [MAC ] [I] [ 9601] MCH Sched Info: LCID:1, Stop: 0, tti is 9602 2021-11-14T22:40:16.746017 [PHY ] [I] [ 9601] cc_idx 0, noise 0.000,rsrp -11.282, rsrq -3.655, rssi 13.891, pathloss 11.282, sinr 141.606, sync_err 0.000000 2021-11-14T22:40:16.746081 [MAC ] [I] [ 9601] MCH Sched Info: LCID:1, Stop: 0, tti is 9602 2021-11-14T22:40:16.746084 [RLC ] [I] MRB0 Rx data PDU SN=0 (16 B) 0000: 00 00 0f e0 86 02 8c 2e 00 00 30 00 00 00 00 80 2021-11-14T22:40:16.746085 [RLC ] [I] MRB0 SN=0 outside rx window[1:1] - discarding

Steps to reproduce the problem

Enable mbsfn with the mbsfn config files in the release, using ZMQ Rf device, then send multicast and follow the ue logs.

Additional Information

Last known working tag is: 5d6b48311ea028a83c4bc6aa532b9d3a3c5ccca6