ah sorry if i made confusion.
I attached /etc/network/interfaces as pastebin,
and /etc/network/interfaces.d/eth0.cfg has only one line
pre-up [ -z `cat /proc/net/bonding/* | grep Slave | grep eth0` ] && true
ah sorry if i made confusion.
I attached /etc/network/ interfaces as pastebin,
and /etc/network/ interfaces. d/eth0. cfg has only one line
pre-up [ -z `cat /proc/net/bonding/* | grep Slave | grep eth0` ] && true