/etc/systemd/timesyncd.conf.wit sed -e 's/#NTP=.*/NTP=ipv6.ntp.ubuntu.com/g'
/etc/frr/daemons.wit sed -e 's/bgpd=no/bgpd=yes/' -e 's/zebra=no/zebra=yes/'
/etc/bash.bashrc.wit sed -e 's/.*witaddon/source \/etc\/bashrc-witaddon/; t; $ s/$/\nsource \/etc\/bashrc-witaddon/'
/etc/dhcp/dhclient.conf.wit sed -e 's/^option.*loopbackv4.*/option loopbackv4 code 225 = ip-address;/; t; 1s/^/option loopbackv4 code 225 = ip-address;\n/'