Дмитрий

iptables -t nat -D POSTROUTING 1
iptables -t nat -I POSTROUTING -p all -s 10.8.0.0/24 ! -d 10.8.0.0/24 -j SNAT --to-source Y.Y.Y.Y

while read LINE; do mkdir -p /путь/к/каталогу/$LINE; done < FILE

dmitryg@dmitrys-mbp:~ $ ssh admin@mikrotik ping 192.168.109.1
admin@192.168.109.253's password:
  SEQ HOST                                     SIZE TTL TIME  STATUS
    0 192.168.109.1                              56  64 0ms
    1 192.168.109.1                              56  64 0ms
    2 192.168.109.1                              56  64 0ms
    3 192.168.109.1                              56  64 0ms

set copy = yes