Edit this file and remove the first network adapter:
/etc/udev/rules.d/70-persistent-net.rules
Then:
rm /etc/ssh/ssh_host_key*
rm /etc/ssh/ssh_host_dsa_key*
rm /etc/ssh/ssh_host_rsa_key*
/etc/init.d/sshd restart
rm /var/lib/dhcpcd/dhcpcd-eth0.info
rm /var/lib/dhcpcd/dhcpcd.duid
/etc/init.d/net.eth0 restart
nano -w /etc/conf.d/hostname
nano -w /etc/conf.d/net
config_eth0=( "x.x.x.x netmask 255.255.255.0 brd x.x.0.255" )
routes_eth0=( "default via x.x.x.x" )
dns_domain="abc.xyz.com"
dns_search=( "abc.xyz.com xyz.com" )
dns_servers_eth0="x.x.x.x x.x.x.x x.x.x.x"
Then edit the following files:
/etc/conf.d/hostname
/etc/conf.d/net