$ sudo ./src/zmap  -p 80 --source-mac=74:a6:cd:d3:07:df -n 65 -c 1                      
Jan 21 15:02:01.655 [INFO] zmap: By default, ZMap will output the unique IP addresses of hosts that respond successfully (e.g., SYN-ACK packet). This is equivalent to running ZMap with the following flags: --output-module=csv --output-fields=saddr --output-filter='success=1 && repeat=0' --no-header-row. If you want all responses, explicitly set an output module or set --output-filter="".
Jan 21 15:02:01.655 [INFO] dedup: Response deduplication method is full
Jan 21 15:02:01.684 [INFO] recv: duplicate responses will be excluded from output
Jan 21 15:02:01.684 [INFO] recv: unsuccessful responses will be excluded from output
 0:00 0%; send: 3 1 p/s (3.24 Kp/s avg); recv: 0 0 p/s (0 p/s avg); drops: 0 p/s (0 p/s avg); hitrate: 0.00%
209.87.59.95
25.234.63.152
20.219.200.226
 0:01 100%; send: 65 done (8.32 Kp/s avg); recv: 3 3 p/s (2 p/s avg); drops: 0 p/s (0 p/s avg); hitrate: 4.62%
Jan 21 15:02:03.694 [INFO] zmap: completed

sudo ./src/zmap  -p 80 --source-mac=74:a6:cd:d3:07:df -n 2 -c 1 --dryrun

Jan 21 15:02:46.977 [INFO] zmap: By default, ZMap will output the unique IP addresses of hosts that respond successfully (e.g., SYN-ACK packet). This is equivalent to running ZMap with the following flags: --output-module=csv --output-fields=saddr --output-filter='success=1 && repeat=0' --no-header-row. If you want all responses, explicitly set an output module or set --output-filter="".
Jan 21 15:02:46.978 [INFO] dedup: Response deduplication method is full
Jan 21 15:02:47.004 [WARN] zmap: too few targets relative to senders, dropping to one sender
Jan 21 15:02:47.005 [INFO] send: dryrun mode -- won't actually send packets
tcp { source: 60311 | dest: 80 | seq: 3443441354 | checksum: 0X98EF }
ip { saddr: 192.168.116.160 | daddr: 142.87.195.165 | checksum: 0X6054 }
eth { shost: 74:a6:cd:d3:07:df | dhost: 06:28:38:19:36:12 }
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tcp { source: 35134 | dest: 80 | seq: 2921426704 | checksum: 0XC8E }
ip { saddr: 192.168.116.160 | daddr: 91.65.84.78 | checksum: 0X2C2 }
eth { shost: 74:a6:cd:d3:07:df | dhost: 06:28:38:19:36:12 }
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Jan 21 15:02:47.006 [INFO] zmap: completed