root@OpenWrt:~# tcpdump tcp port 80 -n
tcpdump: WARNING: eth0: no IPv4 address assigned
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
12:43:05.647544 IP 192.168.0.250.60115 > 70.33.217.71.80: Flags [s], seq 2366124138, win 8192, options [mss 1460,nop,wscale 2,nop,nop,sackOK], length 0
12:43:05.647862 IP 192.168.254.239.60115 > 70.33.217.71.80: Flags [s], seq 2366124138, win 8192, options [mss 1460,nop,wscale 2,nop,nop,sackOK], length 0
12:43:05.647922 IP 192.168.0.250.60116 > 70.33.217.71.80: Flags [s], seq 1563924847, win 8192, options [mss 1460,nop,wscale 2,nop,nop,sackOK], length 0
12:43:05.648204 IP 192.168.254.239.60116 > 70.33.217.71.80: Flags [s], seq 1563924847, win 8192, options [mss 1460,nop,wscale 2,nop,nop,sackOK], length 0
12:43:05.648237 IP 192.168.0.250.60117 > 70.33.217.71.80: Flags [s], seq 3910463144, win 8192, options [mss 1460,nop,wscale 2,nop,nop,sackOK], length 0
12:43:05.648492 IP 192.168.254.239.60117 > 70.33.217.71.80: Flags [s], seq 3910463144, win 8192, options [mss 1460,nop,wscale 2,nop,nop,sackOK], length 0
12:43:05.648582 IP 192.168.0.250.60118 > 70.33.217.71.80: Flags [s], seq 3746632454, win 8192, options [mss 1460,nop,wscale 2,nop,nop,sackOK], length 0
12:43:05.648852 IP 192.168.254.239.60118 > 70.33.217.71.80: Flags [s], seq 3746632454, win 8192, options [mss 1460,nop,wscale 2,nop,nop,sackOK], length 0
12:43:05.648884 IP 192.168.0.250.60119 > 70.33.217.71.80: Flags [s], seq 3047299835, win 8192, options [mss 1460,nop,wscale 2,nop,nop,sackOK], length 0
12:43:05.649136 IP 192.168.254.239.60119 > 70.33.217.71.80: Flags [s], seq 3047299835, win 8192, options [mss 1460,nop,wscale 2,nop,nop,sackOK], length 0
12:43:05.649952 IP 192.168.0.250.60120 > 70.33.217.71.80: Flags [s], seq 1398768834, win 8192, options [mss 1460,nop,wscale 2,nop,nop,sackOK], length 0
12:43:05.650268 IP 192.168.254.239.60120 > 70.33.217.71.80: Flags [s], seq 1398768834, win 8192, options [mss 1460,nop,wscale 2,nop,nop,sackOK], length 0
12:43:05.878233 IP 70.33.217.71.80 > 192.168.254.239.60116: Flags [S.], seq 4189646201, ack 1563924848, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
12:43:05.878395 IP 70.33.217.71.80 > 192.168.0.250.60116: Flags [S.], seq 4189646201, ack 1563924848, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
12:43:05.878422 IP 70.33.217.71.80 > 192.168.254.239.60117: Flags [S.], seq 4066531992, ack 3910463145, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
12:43:05.878532 IP 70.33.217.71.80 > 192.168.0.250.60117: Flags [S.], seq 4066531992, ack 3910463145, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
12:43:05.878613 IP 70.33.217.71.80 > 192.168.254.239.60118: Flags [S.], seq 2980748332, ack 3746632455, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
12:43:05.878729 IP 70.33.217.71.80 > 192.168.0.250.60118: Flags [S.], seq 2980748332, ack 3746632455, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
12:43:05.878752 IP 70.33.217.71.80 > 192.168.254.239.60119: Flags [S.], seq 1598762177, ack 3047299836, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
12:43:05.878845 IP 70.33.217.71.80 > 192.168.0.250.60119: Flags [S.], seq 1598762177, ack 3047299836, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
12:43:05.878866 IP 70.33.217.71.80 > 192.168.254.239.60120: Flags [S.], seq 3559081460, ack 1398768835, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
12:43:05.878959 IP 70.33.217.71.80 > 192.168.0.250.60120: Flags [S.], seq 3559081460, ack 1398768835, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
12:43:05.878980 IP 192.168.0.250.60116 > 70.33.217.71.80: Flags [.], ack 1, win 16425, length 0
12:43:05.879125 IP 192.168.254.239.60116 > 70.33.217.71.80: Flags [.], ack 1, win 16425, length 0
12:43:05.879213 IP 192.168.0.250.60117 > 70.33.217.71.80: Flags [.], ack 1, win 16425, length 0
12:43:05.879433 IP 192.168.254.239.60117 > 70.33.217.71.80: Flags [.], ack 1, win 16425, length 0
12:43:05.879472 IP 192.168.0.250.60116 > 70.33.217.71.80: Flags [P.], seq 1:448, ack 1, win 16425, length 447
12:43:05.879647 IP 192.168.254.239.60116 > 70.33.217.71.80: Flags [P.], seq 1:448, ack 1, win 16425, length 447
12:43:05.879676 IP 192.168.0.250.60118 > 70.33.217.71.80: Flags [.], ack 1, win 16425, length 0
12:43:05.879827 IP 192.168.254.239.60118 > 70.33.217.71.80: Flags [.], ack 1, win 16425, length 0
12:43:05.879914 IP 192.168.0.250.60119 > 70.33.217.71.80: Flags [.], ack 1, win 16425, length 0
12:43:05.880084 IP 192.168.254.239.60119 > 70.33.217.71.80: Flags [.], ack 1, win 16425, length 0
12:43:05.880113 IP 192.168.0.250.60120 > 70.33.217.71.80: Flags [.], ack 1, win 16425, length 0
12:43:05.880261 IP 192.168.254.239.60120 > 70.33.217.71.80: Flags [.], ack 1, win 16425, length 0
12:43:06.082564 IP 70.33.217.71.80 > 192.168.254.239.60116: Flags [.], ack 448, win 54, length 0
12:43:06.082702 IP 70.33.217.71.80 > 192.168.0.250.60116: Flags [.], ack 448, win 54, length 0
12:43:06.092594 IP 70.33.217.71.80 > 192.168.254.239.60116: Flags [F.], seq 471, ack 448, win 54, length 0
12:43:06.092742 IP 70.33.217.71.80 > 192.168.0.250.60116: Flags [F.], seq 471, ack 448, win 54, length 0
12:43:06.093056 IP 192.168.0.250.60116 > 70.33.217.71.80: Flags [.], ack 1, win 16425, length 0
12:43:06.093252 IP 192.168.254.239.60116 > 70.33.217.71.80: Flags [.], ack 1, win 16425, length 0
12:43:06.095379 IP 70.33.217.71.80 > 192.168.254.239.60116: Flags [P.], seq 1:471, ack 448, win 54, length 470
12:43:06.095537 IP 70.33.217.71.80 > 192.168.0.250.60116: Flags [P.], seq 1:471, ack 448, win 54, length 470
12:43:06.095858 IP 192.168.0.250.60116 > 70.33.217.71.80: Flags [.], ack 472, win 16307, length 0
12:43:06.096049 IP 192.168.254.239.60116 > 70.33.217.71.80: Flags [.], ack 472, win 16307, length 0
12:43:06.096278 IP 192.168.0.250.60116 > 70.33.217.71.80: Flags [F.], seq 448, ack 472, win 16307, length 0
12:43:06.096486 IP 192.168.254.239.60116 > 70.33.217.71.80: Flags [F.], seq 448, ack 472, win 16307, length 0
12:43:06.295158 IP 70.33.217.71.80 > 192.168.254.239.60116: Flags [.], ack 449, win 54, length 0
12:43:06.295318 IP 70.33.217.71.80 > 192.168.0.250.60116: Flags [.], ack 449, win 54, length 0
12:43:07.891068 IP 192.168.0.250.60086 > 173.194.38.137.80: Flags [.], seq 2520275771:2520275772, ack 3191710257, win 16425, length 1
12:43:07.891270 IP 192.168.254.239.60086 > 173.194.38.137.80: Flags [.], seq 2520275771:2520275772, ack 3191710257, win 16425, length 1
12:43:07.892073 IP 192.168.0.250.60085 > 173.194.38.137.80: Flags [.], seq 615738033:615738034, ack 3182531800, win 16425, length 1
12:43:07.892291 IP 192.168.254.239.60085 > 173.194.38.137.80: Flags [.], seq 615738033:615738034, ack 3182531800, win 16425, length 1
12:43:07.935897 IP 173.194.38.137.80 > 192.168.254.239.60086: Flags [.], ack 1, win 241, options [nop,nop,sack 1 {0:1}], length 0
12:43:07.936041 IP 173.194.38.137.80 > 192.168.0.250.60086: Flags [.], ack 1, win 241, options [nop,nop,sack 1 {0:1}], length 0
12:43:07.936066 IP 173.194.38.137.80 > 192.168.254.239.60085: Flags [.], ack 1, win 241, options [nop,nop,sack 1 {0:1}], length 0
12:43:07.936169 IP 173.194.38.137.80 > 192.168.0.250.60085: Flags [.], ack 1, win 241, options [nop,nop,sack 1 {0:1}], length 0
12:43:08.653405 IP 192.168.0.250.60115 > 70.33.217.71.80: Flags [s], seq 2366124138, win 8192, options [mss 1460,nop,wscale 2,nop,nop,sackOK], length 0
12:43:08.653650 IP 192.168.254.239.60115 > 70.33.217.71.80: Flags [s], seq 2366124138, win 8192, options [mss 1460,nop,wscale 2,nop,nop,sackOK], length 0
12:43:08.851093 IP 70.33.217.71.80 > 192.168.254.239.60115: Flags [S.], seq 1934351121, ack 2366124139, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
12:43:08.851256 IP 70.33.217.71.80 > 192.168.0.250.60115: Flags [S.], seq 1934351121, ack 2366124139, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
12:43:08.851532 IP 192.168.0.250.60115 > 70.33.217.71.80: Flags [.], ack 1, win 16425, length 0
12:43:08.851727 IP 192.168.254.239.60115 > 70.33.217.71.80: Flags [.], ack 1, win 16425, length 0
12:43:08.883616 IP 70.33.217.71.80 > 192.168.254.239.60117: Flags [S.], seq 4066531992, ack 3910463145, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
12:43:08.883761 IP 70.33.217.71.80 > 192.168.0.250.60117: Flags [S.], seq 4066531992, ack 3910463145, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
12:43:08.884058 IP 192.168.0.250.60117 > 70.33.217.71.80: Flags [.], ack 1, win 16425, options [nop,nop,sack 1 {0:1}], length 0
12:43:08.884250 IP 192.168.254.239.60117 > 70.33.217.71.80: Flags [.], ack 1, win 16425, options [nop,nop,sack 1 {0:1}], length 0
12:43:09.486331 IP 70.33.217.71.80 > 192.168.254.239.60115: Flags [S.], seq 1934351121, ack 2366124139, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
12:43:09.486486 IP 70.33.217.71.80 > 192.168.0.250.60115: Flags [S.], seq 1934351121, ack 2366124139, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
12:43:09.486795 IP 192.168.0.250.60115 > 70.33.217.71.80: Flags [.], ack 1, win 16425, options [nop,nop,sack 1 {0:1}], length 0
12:43:09.486984 IP 192.168.254.239.60115 > 70.33.217.71.80: Flags [.], ack 1, win 16425, options [nop,nop,sack 1 {0:1}], length 0
12:43:09.886478 IP 70.33.217.71.80 > 192.168.254.239.60118: Flags [S.], seq 2980748332, ack 3746632455, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
12:43:09.886631 IP 70.33.217.71.80 > 192.168.0.250.60118: Flags [S.], seq 2980748332, ack 3746632455, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
12:43:09.886923 IP 192.168.0.250.60118 > 70.33.217.71.80: Flags [.], ack 1, win 16425, options [nop,nop,sack 1 {0:1}], length 0
12:43:09.887116 IP 192.168.254.239.60118 > 70.33.217.71.80: Flags [.], ack 1, win 16425, options [nop,nop,sack 1 {0:1}], length 0
12:43:09.888983 IP 70.33.217.71.80 > 192.168.254.239.60120: Flags [S.], seq 3559081460, ack 1398768835, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
12:43:09.889138 IP 70.33.217.71.80 > 192.168.0.250.60120: Flags [S.], seq 3559081460, ack 1398768835, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
12:43:09.889299 IP 192.168.0.250.60120 > 70.33.217.71.80: Flags [.], ack 1, win 16425, options [nop,nop,sack 1 {0:1}], length 0
12:43:09.889538 IP 192.168.254.239.60120 > 70.33.217.71.80: Flags [.], ack 1, win 16425, options [nop,nop,sack 1 {0:1}], length 0
12:43:09.971997 IP 192.168.0.250.60088 > 58.26.1.35.80: Flags [.], seq 4284263650:4284263651, ack 2467736911, win 16138, length 1
12:43:09.972200 IP 192.168.254.239.60088 > 58.26.1.35.80: Flags [.], seq 4284263650:4284263651, ack 2467736911, win 16138, length 1
12:43:10.084770 IP 70.33.217.71.80 > 192.168.254.239.60119: Flags [S.], seq 1598762177, ack 3047299836, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
12:43:10.084920 IP 70.33.217.71.80 > 192.168.0.250.60119: Flags [S.], seq 1598762177, ack 3047299836, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
12:43:10.085214 IP 192.168.0.250.60119 > 70.33.217.71.80: Flags [.], ack 1, win 16425, options [nop,nop,sack 1 {0:1}], length 0
12:43:10.085406 IP 192.168.254.239.60119 > 70.33.217.71.80: Flags [.], ack 1, win 16425, options [nop,nop,sack 1 {0:1}], length 0
12:43:10.184929 IP 58.26.1.35.80 > 192.168.254.239.60088: Flags [.], ack 1, win 3918, options [nop,nop,sack 1 {0:1}], length 0
12:43:10.185084 IP 58.26.1.35.80 > 192.168.0.250.60088: Flags [.], ack 1, win 3918, options [nop,nop,sack 1 {0:1}], length 0
Trace complete.
EDIT: It's coming from my radio antenna. (Motorola Canopy)
My antenna's radio IP 192.168.3.1 my antenna and router have the same subnet 255.255.255.0 would that affect range of broadcast to 192.168.3.0?