Resolved Issues: 21.4R2

General Routing

FIPS mode is not supported. PR1530951
IS-IS adjacency is not coming up through TCC l2circuit. PR1590387
On PTX devices, inconsistency in the platform name used in multiple places, version, snmp mibs, etc. PR1597999
Traffic loss might be observed with some MPLS labels in multipath BGP scenarios. PR1618507
EAPol packets over Layer 2 circuit might get dropped at the tunnel start. PR1628196
On PTX devices, ddos-protection protocols group ARP counters not showing correct values. PR1629097
SNMP trap message for FPC restart shows FRU removal instead of Fru Offline/Fru Power off. PR1629738
Multiple link flaps and traffic might be lost on the links. PR1630006
RPD core might be observed with warm-standby configurations due to reference counting issues. PR1631871
SPMB might crash immediately after a switchover. PR1637950
CCL:NGPR: RPD_KRT_RESPOSE_ERROR: krt change failed for prefix <> error from kernel is "EINVAL -- Bad parameter in request PR1638745
MAC-VRF does not support MAC limit configuration. PR1647327

After USB upgrade, primary role is getting resolved but FPC's are not coming online.PR1637636

Aggregated Ethernet interface remains up instead of down after deleting loopback and ae interface IP on neighbor while verifying BFD sessions on router. PR1640240

Unexpected traffic loss on LSP headend might be observed when downstream IGP metric changes. PR1625438

On PTX platforms, vmcore on primary Routing Engine might be reported due to mbuf corruption. PR1602442

The rpd might crash and restart when NSR is enabled. PR1620463
The rpd might crash after clearing IS-IS database. PR1631738
The BGP route might still be present in the multi-path route after increased IGP cost. PR1643665