Lang: 
auto eth1978
iface eth1978 inet manual
  pre-up ip link add arendtsen type vrf table 1978
  post-up ip link set up dev arendtsen
  post-down ip link delete dev arendtsen

auto eth1042
  iface eth1042 inet manual
  pre-up ip link add dn42 type vrf table 1042
  post-up ip link set up dev dn42
  post-down ip link delete dev dn42