strange iptables log entry

[M.W. Chang]

The actual log entry:

Mar 19 00:21:12 server kernel: [IPTABLES DROP] : IN=eth1 OUT= 
MAC=00:a0:c9:57:29:41:00:00:77:95:dc:b8:08:00 SRC=192.168.128.6 
DST=61.10.50.59 LEN=352 TOS=0x00 PREC=0x00 TTL=251 ID=19653 DF PROTO=UDP 
SPT=67 DPT=68 LEN=332

root at server: old> route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use 
Iface
192.168.2.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
61.10.50.0      0.0.0.0         255.255.254.0   U     0      0        0 eth1
127.0.0.0       0.0.0.0         255.0.0.0       U     0      0        0 lo
0.0.0.0         61.10.50.1      0.0.0.0         UG    0      0        0 eth1

It should be coming from outside rather from within my own LAN. Anyway, 
it's blocked and that should be ok.

> This could have been someone who had recently been on another network 
> with different IP ranges.  Since 67 and 68 are used for DHCP/BOOTP, this 
> might have been a windows machine requesting it's last known IP address 
> from a DHCP server address which took the packets through your 
> firewall.  Without more knowledge of the firewall, your routing, and the 
> actual firewall logs I'm afraid I can't be much more specific.

-- 
   .~.    http://toylet.homeip.net
  / v \   Linux 2.4.22-xfs
/( _ )\  10:54am up 2 days 14:33
   ^ ^    load average: 1.00 1.00 0.93