[root@chonnom ]# mysql netflow -e "select inet_ntoa(ipv4_dst_addr) from records" -pxxxxxx > aaa.sql

[root@chonnom ]# cat aaa.sql
inet_ntoa(ipv4_dst_addr)
61.40.147.219
xxx.xxx.49.69
xxx.xxx.56.34
xxx.xxx.45.83
xxx.xxx.53.253
xxx.xxx.15.93
xxx.xxx.17.74
xxx.xxx.4.28