Interfaces
/etc/hostname.em0 inet 213.95.21.200 255.255.255.0 NONE inet6 alias 2001:780:3:5::122 64 inet6 alias 2001:780:132::1 48
Defaultgateway
cat /etc/mygate 213.95.21.1 2001:780:3:5::1
Neustart
sh /etc/netstart em0