Comment 5 for bug 1881972

# coredumpctl gdb 28819
           PID: 28819 (systemd-network)
           UID: 100 (systemd-network)
           GID: 102 (systemd-network)
        Signal: 6 (ABRT)
     Timestamp: Tue 2020-06-16 19:36:22 UTC (16min ago)
  Command Line: /lib/systemd/systemd-networkd
    Executable: /lib/systemd/systemd-networkd
 Control Group: /system.slice/systemd-networkd.service
          Unit: systemd-networkd.service
         Slice: system.slice
       Boot ID: 578e8b2c2e1a43afbd27211be1a4f531
    Machine ID: ec267b3475883f9edb99f554607bb456
      Hostname: ip-10-0-4-251
       Storage: /var/lib/systemd/coredump/core.systemd-network.100.578e8b2c2e1a43afbd27211be1a4f531.28819.1592336182000000.lz4
       Message: Process 28819 (systemd-network) of user 100 dumped core.

                Stack trace of thread 28819:
                #0 0x00007f740d023e97 raise (libc.so.6)
                #1 0x00007f740d025801 abort (libc.so.6)
                #2 0x00007f740d06e897 n/a (libc.so.6)
                #3 0x00007f740d07590a n/a (libc.so.6)
                #4 0x00007f740d07ce1c cfree (libc.so.6)
                #5 0x000055fa5c16276b routing_policy_rule_free (systemd-networkd)
                #6 0x000055fa5c1f69e2 manager_rtnl_process_rule (systemd-networkd)
                #7 0x000055fa5c1731d6 process_match (systemd-networkd)
                #8 0x000055fa5c173413 io_callback (systemd-networkd)
                #9 0x000055fa5c178350 source_dispatch (systemd-networkd)
                #10 0x000055fa5c1785ea sd_event_dispatch (systemd-networkd)
                #11 0x000055fa5c178779 sd_event_run (systemd-networkd)
                #12 0x000055fa5c1789bb sd_event_loop (systemd-networkd)
                #13 0x000055fa5c1413a6 main (systemd-networkd)
                #14 0x00007f740d006b97 __libc_start_main (libc.so.6)
                #15 0x000055fa5c141a8a _start (systemd-networkd)