{ writeShellScriptBin, iproute2 }:

writeShellScriptBin "netali-configure-net-ruby" ''
  if [[ $# -ne 3 ]]; then
    echo "Usage: netali-configure-net-ruby [interface] [last-ip-block] [mode]"
    echo ""
    echo "interface:       name of the network interface to configure"
    echo "last-ip-block:   last block of the IPv6 address of this host"
    echo "mode:            'public' or 'internal' (affects IP subnet)"
    exit 1
  fi

  INTERFACE=$1
  LAST_IP_BLOCK=$2
  MODE=$3

  if [[ $MODE == "public" ]]; then
    PREFIX="2a00:fe0:1:21f::"
    GATEWAY="2a00:fe0:1:21f::1"
  else
    PREFIX="2a00:fe0:3f5:1000::"
    GATEWAY="2a00:fe0:3f5:1000::1"
  fi

  ${iproute2}/bin/ip link set up $INTERFACE
  ${iproute2}/bin/ip a a $PREFIX$LAST_IP_BLOCK/64 dev $INTERFACE
  ${iproute2}/bin/ip r a default via $GATEWAY dev $INTERFACE

  echo "nameserver 2a00:fe0:0:2::300" > /etc/resolv.conf
  echo "nameserver 2a00:fe0:0:3::300" >> /etc/resolv.conf
''