fix: Support longer interface names (#960)

  local gateway="$1"

  local interface="$2"

  local label="compat"

  local samba="20.20.20.1"

  local err="failed to configure IP alias for backwards compatibility."

  [[ "$samba" == "$gateway" ]] && return 0

  [[ "${BOOT_MODE:-}" != "windows"* ]] && return 0

  if [[ "$interface" != "${interface:0:8}" ]]; then

    error "Bridge name too long!" && return 1

  if [[ "$interface" != "${interface:0:9}" ]]; then

    label="c"

    if [[ "$interface" != "${interface:14}" ]]; then

      warn "$err Interface name \"$interface\" exceeds 14 characters!" && return 0

    fi

  fi

  # Backwards compatibility with old installations

  if ip address add dev "$interface" "$samba/24" label "$interface:compat" 2>/dev/null; then

  if ip address add dev "$interface" "$samba/24" label "$interface:$label" 2>/dev/null; then

    SAMBA_INTERFACE="$samba"

  else

    msg=$(ip address add dev "$interface" "$samba/24" label "$interface:compat" 2>&1)

    msg=$(ip address add dev "$interface" "$samba/24" label "$interface:$label" 2>&1)

    if [[ "${msg,,}" != *"address already assigned"* && "$PODMAN" != [Yy1]* ]]; then

      echo "$msg" >&2

      warn "failed to configure IP alias for backwards compatibility. $ADD_ERR --cap-add NET_ADMIN"

      warn "$err $ADD_ERR --cap-add NET_ADMIN"

    fi

  fi