Why strange error messages "FRADI" show up in the kernel log

Issue

• We are seeing some strange error messages show up in the kernel log. Some of the messages are coming from this iptables rule:

[root@hostname ~]# iptables -t filter -L FORWARD -n -v
Chain FORWARD (policy ACCEPT 372 packets, 19344 bytes)
 pkts bytes target     prot opt in     out     source               destination
  372 19344 LOG        all  --  *      *       0.0.0.0/0            0.0.0.0/0           LOG flags 0 level 4 prefix `FORWARD:'
[root@hostname ~]#

• These can be identified via the "FORWARD:" at the beginning, but there are these other messages mixed in with them, they don't seem to have any sort of identifiable prefix and I am wondering what is causing them. Its this kernel version:

• Here's the messages:

[root@hostname ~]# cat /var/log/kernel.txt
2013-05-07T14:22:31.223826-07:00 hostname kernel: imklog 5.8.10, log source = /proc/kmsg started.
2013-05-07T14:22:42.883663-07:00 hostname kernel: <>382.990 OWR:Nbn111 U=oSC4...6DT2104. E=4TS00 RC00 T=2I=34 FPOOTPST241DT8 IDW380RS00 Y RP0MR=x001
2013-05-07T14:22:42.883687-07:00 hostname kernel: 4[260237]FRADI=oOTl R=7101 S=0..61LN6 O=x0PE=x0TL6 D671D RT=C P=92 P=0WNO=25 E=x0SNUG= AK0b10 <4[260239]FRADI=oOTl R=7101 S=0..61LN6 O=x0PE=x0TL6 D671D RT=C P241DT8 IDW380RS00 Y RP0MR=x001
2013-05-07T14:22:42.883694-07:00 hostname kernel: 4[260241]FRADI=oOTl R=7101 S=0..61LN6 O=x0PE=x0TL5 D671D RT=C P=92 P=0WNO=25 E=x0SNUG= AK0b10 <>360242]FRADI=oOTl R=7101 S=0..61LN6 O=x0PE=x0TL5 D671D RT=C P=92 T8 IDW380RS00 Y RP0MR=x001
2013-05-07T14:22:42.883703-07:00 hostname kernel: 4[260244]FRADI=oOTl R=7101 S=0..61LN=TS00 RC00 T=7I=34 FPOOTPST241DT8 IDW380RS00 Y RP0MR=x001
2013-05-07T14:22:42.883881-07:00 hostname kernel: 4[260244]FRADI=oOTl R=7101 S=0..61LN6 O=x0PE=x0TL4 D671D RT=C P=92 P=0WNO=25 E=x0SNUG= AK0b1
2013-05-07T14:22:42.883897-07:00 hostname kernel: 4>[382.989 OWR:Nl U=oSC4...6DT2104. E=4TS00 RC00 T=9I=34 FPOOTPST241 DT8 IDW380RS00 Y RP0MR=x001
2013-05-07T14:22:42.883909-07:00 hostname kernel: 4[260254]FRADI=oOTl R=7101 S=0.. E=4TOS=x0PE=x0TL3 D671D RT=C P=92 P=0WNO=25 E=x0SNUG= AK0b10 <>2.9109]FRADI=oOTl R=7101 S=0..61LN6 O=x0PE=x0TL3 D671D RT=C P=92T8 INDW380RS00 Y RP0MR=x001
2013-05-07T14:22:42.883916-07:00 hostname kernel: 4[260258]FRADI=oOTlo SR=7101 S=0..61LN6 O=x0PEC=00 T=4I=34 FPOOTPST241DT8 IDW380RS00 Y RP0MR=x001
2013-05-07T14:22:42.883926-07:00 hostname kernel: 4[260252]FRADI=oOTl R=7101 S=0..61LN6 O=x0PE=x0TL3 D671D RT=C P=92 P=0WNO=25 E=x0SNU0MR=x001
2013-05-07T14:22:44.556994-07:00 hostname kernel: [328621.964851] FORWARD:IN=lo OUT=lo SRC=192.168.0.16 DST=192.168.0.1 LEN=40 TOS=0x00 PREC=0x00 TTL=21 ID=63742 DF PROTO=TCP SPT=29421 DPT=80 WINDOW=32850 RES=0x00 RST URGP=0 MARK=0xb01001
2013-05-07T14:22:44.557001-07:00 hostname kernel: [328621.964868] FORWARD:IN=lo OUT=lo SRC=192.168.0.16 DST=192.168.0.1 LEN=40 TOS=0x00 PREC=0x00 TTL=20 ID=63742 DF PROTO=TCP SPT=29421 DPT=80 WINDOW=32850 RES=0x00 RST URGP=0 MARK=0xb01001
[root@hostname ~]#

• Any clue where these messages with "FRADI" in them are coming from? We are wondering if they might be related to some strangeness.