Description of problem:
Running dhcp6s with sample configuration (or any configuration) results in
segfaulting.

Version-Release number of selected component (if applicable):
dhcpv6-0.10-42.fc7

How reproducible:
Reproducible everytime.

Steps to Reproduce:
1. Login as root.
2. Execute following command:

#/usr/sbin/dhcp6s -Df -c /usr/share/doc/dhcpv6-0.10/dhcp6s.conf eth0

Actual results:
[root@chatteau ~]# dhcp6s -Df -c /usr/share/doc/dhcpv6-0.10/dhcp6s.conf eth2
Aug/23/2007 16:19:53 extracted an existing DUID from
/var/lib/dhcpv6/dhcp6s_duid: 00:01:00:01:0e:60:1f:31:00:08:5c:5b:f4:13
Aug/23/2007 16:19:53 set timer for syncing file ...
Segmentation fault


Expected results:
No segmentation fault.

Additional info:
-- begin dump --
[root@chatteau ~]# gdb dhcp6s
GNU gdb Red Hat Linux (6.6-15.fc7rh)
Copyright (C) 2006 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu"...
Using host libthread_db library "/lib64/libthread_db.so.1".
(gdb) run  -Df -c /usr/share/doc/dhcpv6-0.10/dhcp6s.conf eth2
Starting program: /usr/sbin/dhcp6s -Df -c /usr/share/doc/dhcpv6-0.10/dhcp6s.conf
eth2
Aug/23/2007 16:25:41 extracted an existing DUID from
/var/lib/dhcpv6/dhcp6s_duid: 00:01:00:01:0e:60:1f:31:00:08:5c:5b:f4:13
Aug/23/2007 16:25:41 set timer for syncing file ...

Program received signal SIGSEGV, Segmentation fault.
lyylex () at lex.lyy.c:1278
1278                    *yy_cp = (yy_hold_char);
(gdb) bt
#0  lyylex () at lex.lyy.c:1278
#1  0x0000000000408da5 in init_leases (name=<value optimized out>) at lease.c:194
#2  0x0000000000403c07 in main (argc=5, argv=0x7fff9a561d20) at dhcp6s.c:235
#3  0x000000353a61dab4 in __libc_start_main () from /lib64/libc.so.6
#4  0x0000000000401ea9 in _start ()
(gdb) quit
The program is running.  Exit anyway? (y or n) y
-- end dump --