When running routed (from routed-0.10-10) on i386 RH5.2,
with the "-t" flag, routed dumps core.

"gdb `which routed` core" shows:
GNU gdb 4.17.0.4 with Linux/x86 hardware watchpoint and FPU
support
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This GDB was configured as "i386-redhat-linux"...
(no debugging symbols found)...
Core was generated by `routed -t'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /lib/libc.so.6...done.
Reading symbols from /lib/ld-linux.so.2...done.
Reading symbols from /lib/libnss_files.so.1...done.
#0  0x4003e4ad in _IO_vfprintf (s=0x0,
    format=0x804d75c "rtioctl %s %08x/%08x\n",
ap=0xbfffd834) at vfprintf.c:881
vfprintf.c:881: No such file or directory.
(gdb)