Crash in RB_INSERT in zebra

[donaldsharp]

AssertionError:  r1: zebra crashed. Core file found - Backtrace follows:
E   AssertionError: 
    r1: zebra crashed. Core file found - Backtrace follows:
    [New LWP 27460]
    [New LWP 27461]
    [Thread debugging using libthread_db enabled]
    Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
    Core was generated by `/usr/lib/frr/zebra'.
    Program terminated with signal SIGABRT, Aborted.
    #0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
    [Current thread is 1 (Thread 0x7fcd5e2987c0 (LWP 27460))]
    #0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
    #1  0x00007fcd5d4c0801 in __GI_abort () at abort.c:79
    #2  0x00007fcd5df0956f in ?? () from /usr/lib/x86_64-linux-gnu/frr/libfrr.so.0
    #3  <signal handler called>
    #4  0x00007fcd5def7e24 in _rb_insert () from /usr/lib/x86_64-linux-gnu/frr/libfrr.so.0
    #5  0x00007fcd5dee0844 in if_create () from /usr/lib/x86_64-linux-gnu/frr/libfrr.so.0
    #6  0x00005597f3d5935e in netlink_link_change ()
    #7  0x00005597f3d60af4 in netlink_parse_info ()
    #8  0x00005597f3d612b5 in ?? ()
    #9  0x00007fcd5df16a46 in thread_call () from /usr/lib/x86_64-linux-gnu/frr/libfrr.so.0
    #10 0x00007fcd5dee7f68 in frr_run () from /usr/lib/x86_64-linux-gnu/frr/libfrr.so.0
    #11 0x00005597f3d54281 in main ()

This was found in the pim_basic topology.

[sworleys]

@donaldsharp can we close this one? are you still seeing it