fence_ipmilan fails with 'ExpectToken returned -1' when using -vv or higher verbosity in RHEL 5

Issue

• When I run fence_ipmilan with -vv or higher verbosity, it fails. When I run fence_ipmitool directly, it works.

# fence_ipmilan -a 192.168.2.10 -l fence -p administrator -vvv -P
Rebooting machine @ IPMI:192.168.2.10...Spawning: '/usr/bin/ipmitool -I lanplus -H '192.168.2.10' -U 'fence' -P 'administrator' -v -v -v chassis power status'...
Spawned: '/usr/bin/ipmitool -I lanplus -H '192.168.2.10' -U 'fence' -P 'administrator' -v -v -v chassis power status' - PID 3821
Looking for: 
    'Password:', val = 1
    'Unable to establish LAN', val = 11
    'IPMI mutex', val = 14
    'Unsupported cipher suite ID', val = 2048
    'read_rakp2_message: no support for', val = 2048
    'Chassis Power is off', val = 4096
    'Chassis Power is on', val = 8192
ExpectToken returned -1
ExpectToken failed.  Info returned:
>>>>>
IPMI LAN host 192.168.2.10 port 623

>> Sending IPMI command payload
>>    netfn   : 0x06
>>    command : 0x38
>>    data    : 0x8e 0x04 
[...]
Chass
>> Sending IPMI command payload
>>    netfn   : 0x06
>>    command : 0x3c
>>    data    : 0xee 0xa1 0x08 0x00 

BUILDING A v2 COMMAND
>> Initialization vector (16 bytes)
 d2 17 b0 cd e8 6f 96 03 8e bd 63 84 9a ba 22 15
authcode input (48 bytes)
 06 c0 ee a1 08 00 05 00 00 00 20 00 d2 17 b0 cd
 e8 6f 96 03 8e bd 63 84 9a ba 22 15 8f 1b 81 23
 f0 2f 94 51 a6 68 54 84 16 a1 fd bd ff ff 02 07
authcode output (12 bytes)
 5f 95 e0 64 3b 65 d3 9d 74 e1 f4 9b
<< IPMI Response Session Header
<<   Authtype                : Unknown (0x06)
<<   Payload type            : IPMI (0)
<<   Session ID              : 0xa0a2a3a4
<<   Sequence                : 0x00000003
<<   IPMI Msg/Payload Length : 32
<< IPMI Response Message Header
<<   Rq Addr    : 81
<<   NetFn      : 07
<<   Rq LUN     : 0
<<   Rs Addr    : 20
<<   Rq Seq     : 03
<<   Rs Lun     : 0
<<   Command    : 3c
<<   Compl Code : 0x00
Closed Session 0008a1ee

is Power is on

<<<<<
Error = 2 (No such file or directory)
Reaping pid 3821
Failed

• ipmitool seems to split some output lines and mix in debug output when using -vvv.