auto eth2
iface eth2 inet6 auto
  privext 0
  ya-netconfig-disable yes
  pre-up /sbin/ethtool -K $IFACE lro off tso off
  post-up /sbin/ip link set dev $IFACE mtu 9000
  post-up /sbin/ip -6 route append fc01:0:2::/48 metric 1024 nexthop via fe80::1 dev $IFACE weight 1

auto eth6
iface eth6 inet6 auto
  privext 0
  ya-netconfig-disable yes
  pre-up /sbin/ethtool -K $IFACE lro off tso off
  post-up /sbin/ip link set dev $IFACE mtu 9000
  post-up /sbin/ip -6 route append fc01:0:2::/48 metric 1024 nexthop via fe80::1 dev $IFACE weight 1

