ICMP---why am i seeing this?

["Mike ." <dmciscobgp () hotmail com>]

hello



racked my brain trying to figure this one out. not sure if this is an NMAP thing or not. i tested this using another 
tool and it did not display the same results. simple ICMP timestamp to my router from my laptop. my question is why the 
hell am i replying back after the received reply with the error/unreachable???? i am not running any firewall whatsoever


Mike


IP (tos 0x0, ttl  44, id 1198, offset 0, flags [none], proto: ICMP (1), length:
40) 192.168.0.16 > 192.168.0.1: ICMP time stamp query id 20765 seq 0, length 20


IP (tos 0x0, ttl  64, id 52689, offset 0, flags [none], proto: ICMP (1), length:
 40) 192.168.0.1 > 192.168.0.16: ICMP time stamp reply id 20765 seq 0: org 00:00
:00.000, recv 21:43:58.250, xmit 21:43:58.250, length 20


IP (tos 0x0, ttl 128, id 17051, offset 0, flags [none], proto: ICMP (1), length:
 68) 192.168.0.16 > 192.168.0.1: ICMP 192.168.0.16 protocol 1 unreachable, lengt
h 48
        IP (tos 0x0, ttl  64, id 52689, offset 0, flags [none], proto: ICMP (1),
 length: 40) 192.168.0.1 > 192.168.0.16: ICMP time stamp reply id 20765 seq 0: o
rg 00:00:00.000, recv 21:43:58.250, xmit 21:43:58.250, length 20


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